feat(bitcoind_rpc): introduce bitcoind_rpc chain-src crate

Also introduce `bitcoind_rpc` cli example.

Add tests:

* `test_sync_local_chain` ensures that `Emitter::emit_block` emits
  blocks in order, even after reorg.
* `test_into_tx_graph` ensures that `into_tx_graph` behaves
  appropriately for both mempool and block updates. It should also
filter txs and map anchors correctly.

Author: evanlinjin

Cargo.toml

@@ -5,8 +5,10 @@ members = [
     "crates/file_store",
     "crates/electrum",
     "crates/esplora",
+    "crates/bitcoind_rpc",
     "example-crates/example_cli",
     "example-crates/example_electrum",
+    "example-crates/example_rpc",
     "example-crates/wallet_electrum",
     "example-crates/wallet_esplora_blocking",
     "example-crates/wallet_esplora_async",

crates/bitcoind_rpc/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "bdk_bitcoind_rpc"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bdk_chain = { path = "../chain", version = "0.5.0", features = ["serde", "miniscript"] }
+bitcoincore-rpc = { version = "0.17.0" }
+
+[dev-dependencies]
+bitcoind = { version = "0.32.0", features = ["25_0"] }
+anyhow = { version = "1" }