Add abstract definition of JumpPort Portal contracts

Summary by CodeRabbit

• New Features
  • Introduced a new contract enabling administrators to manage unlock permissions for accounts.
  • Added functions allowing administrators to unlock all tokens or block portal activities directly.
  • Enhanced role-based access control with an admin role that implicitly includes all permissions.
  • Improved event notifications for role and permission changes.
• Bug Fixes
  • Corrected typographical errors in contract descriptions for improved clarity.
• Chores
  • Updated Solidity compiler version to 0.8.20 for improved compatibility and performance.