Proof of Concept: Make tests independent using bitcoind crate and migrate to github actions

[RCasatta]

I think we should migrate to github actions and make integrations tests independent proper #[test] like I have done here with test_get_blockchain_info

Since it's a big refactor, I would like feedback and non-binding pre-approval before continuing

[p0lunin]

bitcoind crate is depend of bitcoincore-rpc. So it is strange to use bitcoind which depends on bitcoincore-rpc to test bitcoincore-rpc. You can just write simple script to initialize bitcoind like i do it here: https://github.com/p0lunin/mint/blob/main/tracker/tests/setup_single_node.sh, https://github.com/p0lunin/mint/blob/main/tracker/tests/regtest_bitcoin_node.rs#L75-L85.

[RCasatta]

bitcoind crate is depend of bitcoincore-rpc. So it is strange to use bitcoind which depends on bitcoincore-rpc to test bitcoincore-rpc

that is true, because it's handy for users to have the daemon launched and the rpc client ready to perform requests. However in this MR PoC I don't use the client from the crate but a locally created one, testing current HEAD of rust-bitcoincore-rpc

You can just write simple script to initialize bitcoind like i do it here:

yeah, very similar as the bitcoind crate, I personally prefer to use a crate instead of including source code, as a dev-dep there aren't big security concern I think