[BTC]: Add support for Babylon Staking transactions

[satoshiotomakan]

Description

This PR adds support for native Babylon Staking. That means WalletCore is able to generate and sign BTC Stake/Unstake/Withdraw/Slashing transactions.

Docs:
https://github.com/babylonlabs-io/babylon/blob/a8c9d27ab1d489eb55c23cbb2c75b87e1a85afdb/docs/staking-script.md
https://github.com/babylonchain/babylon/blob/dev/docs/transaction-impl-spec.md

Libs:
Transaction generation: https://github.com/babylonlabs-io/btc-staking-ts/blob/dev/src/staking/transactions.ts
Staking scripts: https://github.com/babylonlabs-io/btc-staking-ts/blob/dev/src/staking/stakingScript.ts

How to test

Run Rust tests

Types of changes

Adds Babylon.proto, corresponding transaction builders.
Also adds support for P2TR multi-sig transactions

Checklist

• Generate Staking, Unbonding, Slashing scriptPubkeys according to the given Staking parameters
• Add Staking transaction generation and signing
• Multi-sig P2TR UTXOs
• Spend Staking transaction via timelock path
• Spend Staking transaction via unbonding path
• Spend Staking transaction via slashing path
• Spend Unbonding transaction via timelock path
• Spend Unbonding transaction via slashing path
• Generate an unsigned transaction bytes on TransactionCompiler.preImageHashes() call
• Add iOS/Android/WASM unit tests

If you're adding a new blockchain

• I have read the guidelines for adding a new blockchain.

[github-actions]

Binary size comparison

➡️ aarch64-apple-ios: 12.48 MB

➡️ aarch64-apple-ios-sim: 12.48 MB

➡️ aarch64-linux-android: 16.10 MB

➡️ armv7-linux-androideabi: 13.74 MB

➡️ wasm32-unknown-emscripten: 11.42 MB