Improve code structure, clean up index.ts, and introduce metadata to packets

[jafayer]

This pull request includes several changes to improve the documentation, refactor the codebase, and add new features. The most important changes include adding a GitHub Actions workflow for building and deploying documentation, refactoring type imports, and enhancing the cache implementation with detailed comments and additional methods.

Documentation and Workflow Improvements:

• Added a GitHub Actions workflow to build and deploy TypeDoc documentation (.github/workflows/docs.yaml).

Codebase Refactoring:

• Moved type imports from server to types/server in various files (src/common/network/net.ts, src/common/router/DefaultRouter.ts, src/common/router/router.ts). [1] [2] [3]
• Removed unnecessary ts property from Connection interface in net.ts and tcp.ts files (src/common/network/net.ts, src/common/network/tcp.ts). [1] [2]

Feature Enhancements:

• Added detailed comments and new methods to the DefaultCache class, including methods for clearing the cache and handling cache entries (src/plugins/cache/Cache.ts, src/plugins/cache/DefaultCache/index.ts). [1] [2] [3] [4] [5] [6] [7]

Dependency Management:

• Corrected the misplaced dependency for @types/dns-packet in package.json (package.json). [1] [2]

Code Export Adjustments:

• Updated exports in src/index.ts to reorganize and simplify module exports (src/index.ts).