[Blockchain/Rust] Create tw_utxo and adjust tw_bitcoin

[lamafab]

We're planning on separating the UTXO model from tw_bitcoin and making it more generic to also support any kind of (Bitcoin) fork, such as Bitcoin Cash, Litecoin, etc. This UTXO crate will not include (standardized) scripts such as P2PKH and so on. Additionally, tw_bitcoin should be extended with the tw_coin_entry crate similar to #3322.

• Create tw_utxo
  • Starting implementing this
  • Create Protobuf structures
  • Extend with tw_coin_entry? At least use similar mechanisms such as compile(), json_signer(), ...
    • Add preimage_hashes() which generates the Sighashes for signing.
    • Add compile() which building the final, serialized transaction.
  • Support SIGHASH variants (All, Single, AllPlusAnyoneCanPay, etc...)
  • Support signature hashing variants (legacy, segwit and taproot).
• Update tw_bitcoin
  • Started implementing this
  • Make use of tw_utxo
  • Extend with tw_coin_entry
  • Add planner for input selection and required "targets"
    • Extend appropriate Protobuf structures
    • Specific planners for BRC20, Ordinals, etc. Standardize those, similar to [ETH]: Improve ERC standards #3338
  • Add proper fee projector/calculator

[weixuefeng]

not support generate taproot address yet？