Wallet: implement SendSiacoinsFromAddress; refactor interface

Summary by CodeRabbit

• New Features
  • Introduced advanced transaction building options for more customized transaction handling.
  • Enhanced transaction methods to support additional parameters, improving flexibility in transactions.
• Refactor
  • Simplified transaction building process with the introduction of TxBuilderOptions.
  • Updated and renamed methods for clearer functionality and improved transaction handling.
• Bug Fixes
  • Fixed logic for identifying premined unlock hashes to ensure accurate transaction processing.