Merge bitcoindevkit/bdk#1070: Rename methods of esplora ext

Merge bitcoindevkit/bdk#1070: Rename methods of esplora ext

20900218ceba728c8051a3c017a6341d74cbaee3 refactor: rename methods in EsploraExt and EsploraExtAsync (Vladimir Fomene)

Pull request description:

  ### Description

  This PR fixes #1058. Built on top of #1040

  ### 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

  #### New Features:

  * [ ] I've added tests for the new feature
  * [ ] I've added docs for the new feature

ACKs for top commit:
  realeinherjar:
    ACK 2090021
  danielabrozzoni:
    ACK 20900218ceba728c8051a3c017a6341d74cbaee3 - code looks good, `example_esplora` and `wallet_esplora_blocking` work just fine.

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