Enable TC direct signing for extension wallets

[towanTG]

Summary

• add a shared THORChain/Maya transaction intent extractor for toolbox-provided transactions
• enable KeepKey BEX THORChain/Maya signAndBroadcastTransaction without routing through transfer
• enable Vultisig THORChain/Maya signAndBroadcastTransaction without routing through transfer
• add a changeset for wallet package bumps

Verification

• bun run lint
• bun test packages/wallet-extensions/test/tclike-transfer-intent.test.ts
• bun run build:ci

[towanTG]

Added native KeepKey SDK UTXO direct signing on this branch as well.

Additional summary:

• enables KeepKey SDK BTC/BCH/DASH/DOGE/LTC direct signing support
• signs the provided PSBT transaction via KeepKey SDK and broadcasts the serialized tx returned by KeepKey
• uses embedded nonWitnessUtxo prev tx hex when present, with raw tx lookup fallback for witness-only inputs
• adds focused KeepKey UTXO direct signing helper tests
• changeset now includes @swapkit/wallet-hardware

Additional verification:

• bun run lint
• bun test packages/wallet-extensions/test/tclike-transfer-intent.test.ts packages/wallet-hardware/test/keepkey-utxo-direct-signing.test.ts
• bun run build:ci

[towanTG]

Added Vultisig BTC direct signing to this branch as well.

Scope:

• BTC now uses the same UTXO intent extraction path as BCH/DASH/DOGE/LTC
• ZEC is intentionally left out
• added a focused Vultisig BTC provider request-shape test

Verification rerun:

• bun run lint
• bun test packages/wallet-extensions/test/tclike-transfer-intent.test.ts packages/wallet-hardware/test/keepkey-utxo-direct-signing.test.ts
• bun run build:ci