feat(cast): Add hardware wallet registry and alias support (Ledger/Trezor)

[Forostovec]

Motivation

Working with hardware wallets in Foundry requires repeatedly passing --mnemonic-index or a full derivation path to forge/cast. This is tedious and error‑prone. Users want to register a hardware wallet once (by alias) and reuse it in forge script --account and related commands, without re-specifying HD params. Additionally, caching the address helps future flows infer --sender automatically.
Closes #11439

Solution

• Add a persistent hardware wallet registry stored at ~/.foundry/wallets.json.
  • Entry fields: alias, kind (Ledger/Trezor), optional derivation path or mnemonic index, optional cached address.
• Introduce a new command: cast wallet register to register Ledger/Trezor by alias and optionally cache its address by connecting to the device once.
• Extend account resolution:
  • forge script --account recognizes aliases from the registry (in addition to existing private key, mnemonic, keystore, AWS/GCP providers).
  • The keystore path behavior remains unchanged and takes precedence; alias resolution is an additive fallback.
• Update cast wallet list to display registered hardware wallets and a cached address if present.
• Add Config::foundry_wallets_file() helper and wire the new foundry-wallets registry module.

Example usage:

# Register a Ledger with mnemonic index 0 and cache its address
cast wallet register my-ledger --ledger --mnemonic-index 0 --cache

# Use the alias in forge script
forge script script/Deploy.s.sol --rpc-url $RPC --broadcast --account my-ledger

# List local and registered accounts
cast wallet list

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes