Merge #5: Add Blockchain RPC methods

06526db feat(client): Update json-rpc & switch to bitreq (Vihiga Tyonum)
6ff6641 feat(client): Remove Auth::None and update Error (Vihiga Tyonum)
160a130 test: Use `corepc-node` for integration tests (Vihiga Tyonum)
3374d27 feat(client): Add v28 module (valued mammal)
5367165 test: Add client integration tests (Vihiga Tyonum)
9a9779b feat(client): Add RPC methods (Vihiga Tyonum)

Pull request description:

  ###  Description

  This PR adds the following methods for versions 28, 29, and 30 of bitcoind:
  - `getblock`
  - `getbestblockhash`
  - `getblock` (verbosity = 1)
  - `getblockcount`
  - `getblockhash`
  - `getblockfilter`
  - `getblockheader`
  - `getblockheader` (verbose = true)
  - `getrawmempool`
  - `getrawtransaction`

  Also in this PR
  - Update `corepc-types` to v0.11.0
  - Uses `corepc-node` for integration tests
  - Re-export `corepc-types`, `jsonrpc` crates
  - Update `jsonrpc` to v0.19.0 and switched from `minreq_http` to `bitreq_http`

  Fixes #4
  Fixes #19
  Fixes #20

  ### 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:

  * [x] I've added tests for the new feature
  * [x] I've added docs for the new feature
  * [] I've updated `CHANGELOG.md`

ACKs for top commit:
  ValuedMammal:
    reACK 06526db

Tree-SHA512: 00b1a090923cbdffa9dd9c0f0af47d770aed5b66bb6997d142f2dcb9f6c11cb3aeae6f4bdfeed3fcf91b4999bc24d19a2e58538bb5323806c4a815dda670fe99

Author: ValuedMammal