Fork or create new crate to replace rust-bitcoincore-rpc

[notmandatory]

Describe the enhancement

Since rust-bitcoincore-rpc may not be updated as often as we need it was suggested on rust-bitcoin/rust-bitcoincore-rpc#365 that we may want to create our own BDK version of it so we can get changes merged sooner.

Use case

More frequent updates would help us get features we need sooner, like supporting pruned bitcoind nodes.

Additional context

https://github.com/rust-bitcoin/rust-bitcoincore-rpc/pull/365#issuecomment-2327429938