Add Bitcoin network implementation

[devin-ai-integration]

Add Bitcoin Network Implementation

This PR adds Bitcoin as a new network to InterchainJS, including:

1. Bitcoin Network Implementation:

   • Complete implementation in the networks/bitcoin folder
   • Support for multiple address types (P2PKH, P2WPKH, P2SH, P2WSH, P2TR)
   • Transaction signing and broadcasting
   • Message signing and verification

2. Starship Integration:

   • Configuration for Bitcoin in Starship
   • Mock tests for Bitcoin functionality

3. Documentation:

   • Comprehensive guide for adding new networks to InterchainJS
   • Detailed README for the Bitcoin network implementation

4. GitHub Workflows:

   • Added Bitcoin tests to the E2E test workflow
   • Created a separate Bitcoin E2E test workflow

Implementation Details

The Bitcoin implementation follows a phased approach:

Phase 1 (Current PR)

• RPC client for basic blockchain interaction
• Transaction signing and broadcasting
• Address generation and validation
• Basic wallet functionality
• Network configuration (mainnet, testnet, regtest, signet)

Phase 2 (Future Work)

• Full PSBT support with proper serialization
• Multi-signature transaction support
• Advanced script types (P2SH, P2WSH, P2TR)
• Modular signers for different signing methods

Phase 3 (Future Work)

• Hardware wallet interface
• Electrum / Esplora support for light clients
• Custom script logic for advanced use cases

Libraries Used

• @noble/curves/secp256k1: For ECDSA signing
• @noble/hashes: For cryptographic hash functions (sha256, ripemd160)
• @scure/bip32: For HD wallet derivation
• @scure/base: For Base58 and Bech32 encoding

Note on Starship Integration

A separate PR to the Starship repository will be needed to add full Bitcoin support. The current implementation includes a placeholder configuration and mock tests.

Link to Devin run

https://app.devin.ai/sessions/b48dd06a7944481a9ea923c630b814e2

Requested by

Dan Lynch (pyramation@gmail.com)

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

[Zetazzz]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

ok, please proceed to fix the bitcoin check