phsl / new-api

- Split monolithic 922-line TokensTable.js into modular components:
  * useTokensData.js: Custom hook for centralized state and logic management
  * TokensColumnDefs.js: Column definitions and rendering functions
  * TokensTable.jsx: Pure table component for rendering
  * TokensActions.jsx: Actions area (add, copy, delete tokens)
  * TokensFilters.jsx: Search form component with keyword and token filters
  * TokensDescription.jsx: Description area with compact mode toggle
  * index.jsx: Main orchestrator component

- Features preserved:
  * Token status management with switch controls
  * Quota progress bars and visual indicators
  * Model limitations display with vendor avatars
  * IP restrictions handling and display
  * Chat integrations with dropdown menu
  * Batch operations (copy, delete) with confirmations
  * Key visibility toggle and copy functionality
  * Compact mode for responsive layouts
  * Search and filtering capabilities
  * Pagination and loading states

- Improvements:
  * Better separation of concerns
  * Enhanced reusability and testability
  * Simplified maintenance and debugging
  * Consistent modular architecture pattern
  * Performance optimizations with useMemo
  * Backward compatibility maintained

This refactoring follows the same successful pattern used for LogsTable, MjLogsTable, and TaskLogsTable, significantly improving code maintainability while preserving all existing functionality.