Merge bitcoindevkit/bdk#793: bdk v1.0.0-alpha.0

bc3e05c6c671e927d0f954dac602f89a452b3d86 Doc fixes (Daniela Brozzoni)
352f95f55830b0bd1455966a932abc60607d5745 [ci] misc fixes (Daniela Brozzoni)
2fcf9c4adb0d188dd93d5efbc79171197460f43c Make async esplora futures Send (LLFourn)
5dd4ce74cf762184c318e17d5c1d094e47179d69 More documentation improvements (志宇)
ae9b19d84c779ed23506f11352bf0d8c7b1f00b1 `bdk` README improvements (志宇)
def0c9ed397d1e0b94581fafae281f27c31f16ab Add `wallet_esplora_async` example and various fixes (志宇)
26ab2e2d6c1cd90ab1042c3f415ca26464a4c557 Implement EsploraExt for Async client (Vladimir Fomene)
ab9242d10ddaaafae3f6433966658af882d1f735 Replace current caching solution with Rust Cache (Vladimir Fomene)
0aaf420f6d4de3010d3c193d63a904c76c8391a5 examples: exit if balance < SEND_AMOUNT (Daniela Brozzoni)
47faa881fb5669702999d38300fed2e03c0021b1 Fix cargo clippy (Daniela Brozzoni)
9d26121dbc6e0209f4154594c9884600f1298cf3 Improve stdout output for wallet esplora/electrum examples (志宇)
eddd74887017b1aa2d08e079ad3669b455a5d40a Add `wallet_electrum` example (志宇)
0505cd72424a621825f8312af2e342b13a1fc65d Remove transaction-based type parameters and traits (志宇)
de9457fce67f5bdc7a128f68d2e14ec4d4f8947b Changed `inflate_update` logic to not depend on `Cow` (志宇)
69cf6d7924c4599e6a4fd4cd52c291e640324a8f Use os-specific temp dir for `wallet_esplora` example (志宇)
b3836cb30839e1f0b41cb595b4a33b2f47ce04ce Use hardcoded send amount for `wallet_esplora` example (志宇)
b0829322688229120044940160b505f434d7617f Add the wallet_esplora example (Daniela Brozzoni)
d267517dbd24b501415a8dcbb0f937504b093515 NewError implements StdError (fix typo) (Daniela Brozzoni)
0c7a0abb1941f7f03f28fd0ddfe18609d1316fb2 Disable code coverage (Daniela Brozzoni)
dfcbafd6b10746a967c63e7a835ba07ac990e828 Use action-rs/toolchain in CI (Daniela Brozzoni)
0ba41c57515566e3eae15d52fba1ff9422ec5fe8 Make bdk_esplora wasm compatible again (Daniela Brozzoni)
a38f63359d02f508dc987c8a985d34e393d831a8 Make bdk_file_store use bincode v1 (LLFourn)
38ef170ed1be43c60dd34aebd14997ab0082a3ca Make bdk and bdk_chain work under 1.57.0 (Steve Myers)
3a5d7278999d1be9a9edb5d161dfaeed80e255b9 Update workspace dependencies to be relative paths (Steve Myers)
96d932c8305bb6502529918ac6d94b0264458358 Add clippy.toml (Daniela Brozzoni)
5708bf0c8c33bd769baf8fe7d5bd34689511019b Fix docs (Daniela Brozzoni)
5acee8249621a90498e7b1b814b8c2fbbd45022b Update rust stable in CI (1.67.0) (Daniela Brozzoni)
8c9bcebc71c1d721e53c293359198c26122832aa Fix the "repository" field in Cargo.toml (Daniela Brozzoni)
c61b3604e167194516719da75c01653cef5dae6e Fix cargo clippy warnings (Daniela Brozzoni)
1805bd35c0530133e238bbf8d9a41d84e03e058d Fix clippy (Daniela Brozzoni)
3f5a78ae3b1e6c3f0a6acc98bb2445c895cfd743 Disable test-hardware-signer (Daniela Brozzoni)
303a1703c99e9cd02ded904e7e4409cedc21fe75 Rust fmt (Daniela Brozzoni)
b5559767db7e8f389415dfe135907063e21598b8 Rename the stub wallet examples (LLFourn)
2e82cd8c0406e2a0d2a7b40d77f7d0a169b9b9f8 Use tempfile for file_store tests (LLFourn)
c069b0fb4171aa11e980e8e070982d3046e07110 Move everything else over 🎉 (LLFourn)
949608ab1f0ae6ee4d3aad271a24f920068ccb3b Move bdk_electrum into the bdk repo :tada: (Daniela Brozzoni)
03deafb5538e55462443cd8ead0114bf788a7765 Move bdk_file_store into the bdk repo :tada: (Daniela Brozzoni)
37dfa77d9d732b8a48019b8457051659004ab6d9 Move bdk_chain into the bdk repo :tada: (Daniela Brozzoni)
f2188f9dcd094e65fcb5649004ef19c7d4b7ec30 Make lib.rs's docs be the README.md (LLFourn)
1c970a9295044de47da5ef92208b901fb4d9ec44 Fix code coverage CI (Daniela Brozzoni)
94a084aafde5285f0a677a98aa60d4375a62c1d7 Fix doc links (LLFourn)
9edbdf54c9de841db01a741c09017ccca70b76bc [ci] Fix feature flags (LLFourn)
20e45b7af055733af6863a6a297b03a7dc13c8d7 Add back test-hardware-signer feature (LLFourn)
6d05598407aae448ed1ca55a9a446e7cfc029bee Remove test-readme-examples (LLFourn)
b60820a7b5b506421bd6eeed14aaeada750e5f1c Remove authors.workspace because older cargo don't like (LLFourn)
22bec6d363bb3349e26f56243bef9e72277a6790 Delete unused errors (LLFourn)
8a6de3aa2dc9bac479f059630d0788ec1e62301d Convert to workspace (LLFourn)
fdfc9b9ede74ff24df51a33106caf4b5af702a69 Delete unused things (LLFourn)
e1eb0253cf34053a4cb93e7be0ec2d74281eff47 Make doctests work (LLFourn)
3baf9721ec28384fc322909570394e76f8f2c991 Use bdk_chain Balance (LLFourn)
b310a7afdd80f416e35aaeffae1e17b4e1d8a24e Add Wallet::cancel_tx (LLFourn)
5985706c1a8c6358d840eb12ed678836b56ffb02 Add wallet persistence (LLFourn)
57538e53e4f834942ba25c72531a9bbf69982284 Move tests to /tests (LLFourn)
a40da9ba6c41d714d611da35f8868a496df2a767 Make bdk no_std (LLFourn)
aab2b12f7ad57be8dc2c26ff33c44769425cdac4 bdk_core integration initial commit 🔥 (LLFourn)
544c397a38f272f0ac2ffa1a3195fe6a07f2ddbd Modified build, clippy and test steps (志宇)

Pull request description:

  We prepare the BDK repo for a major restructuring 🔥. This PR maintains the existing wallet API as much as possible and adds very little.

  ## Things Done

  - database modules removed
  - blockchain gutted but new esplora syncing code added (this will be gone soon hopefully).
  - minimal API changes.
  - Many macros removed.
  - no longer applicable examples removed.
  - Much conditional compilation removed. Can compile with `--all-features` now.
  - All wallet tests passing
  - TestClient moved into its own repo
  - Example using `esplora`

  ## APIs changed

  - wallet no longer has a `sync` method. This is replaced with `apply_wallet_scan`.
  - address "caching" is gone. You can just change the derivation index with `ensure_derived_up_to` which sets your derivation to at least the argument. Unlike `ensure_addresses_cached` used to do this will alter what getting a new address gives you.
  - `AddressIndex::Reset` is gone. This thing didn't make much sense and is hard to do with the more sane internals we've established. Changing the derivation index changes what script pubkeys the wallet will search so this is dangerous. We plan to add method like `trim_unused` which lowers the derivation index to the highest unused index. Applications must handle giving out old addresses manually now (which I think is good).

  ## Unfinished work

  - [x] esplora example doesn't work for mempool transactions yet (seems like our esplora in testclient doesn't index mempool??).
  - [x] we need to figure out a way to retrieve and store transaction timestamps (we're currently just setting them to `u64::MAX`). In `bdk_core` we never got around to doing this but it needs to be done.
  - [x] A few insights we got from doing this PR should be applied to bdk_core first.
  - [x] doctests not working.

  ### Notes to the reviewers

  Try not to review the actual changes. This PR will be forced pushed a bit so it will be likely wasted.
  I think I did a faithful job of translating the tests. A bit of review here would be helpful.

  I *do* think it would be good to merge this PR soon into the v1 branch so we have something to work off once unfinished work is done.
  Checking out the branch and poke around and give feedback would be the most helpful thing.

  Run the (sort of) working example:

  ```
  cargo run --example esplora --features="bdk_test_client/bitcoind_22_0 bdk_test_client/esplora esplora"
  ```
  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  * [x] This pull request breaks the existing API
  * [ ] I'm linking the issue being fixed by this PR (there's too many!)

ACKs for top commit:
  danielabrozzoni:
    ACK bc3e05c6c671e927d0f954dac602f89a452b3d86

Tree-SHA512: b5fbfd2263bb2a7cbf7b486530e639683775209bea944b266efd9c0447fb632295f7f5ddbd2e8d79796338415eaca26f1876617c2b66523485167b22e75e449e