feat(paper): add dialog documentation about tags and nbt payloads

[ajh123]

This pull request adds new documentation explaining how to use dialog tags for pause screen and quick actions integration, and introduces a new section on using NBT payloads with dialogs in the API. The changes provide detailed code examples and best practices for both registering dialogs with special tags and handling custom NBT data using the adventure-nbt library.

Dialog Tag Registration Enhancements:

• Added documentation on tagging dialogs with PAUSE_SCREEN_ADDITIONS and QUICK_ACTIONS to integrate custom dialogs into the game's pause screen and quick actions menu, including a full code example for registering these tags in a plugin bootstrapper.

NBT Payload Support for Dialogs:

• Introduced a new section describing how to attach and read NBT payloads to dialog actions, covering both sending custom NBT data with dialog buttons and handling it with PlayerCustomClickEvent.
• Provided guidance and code samples for creating NBT payloads using the adventure-nbt library, including exception handling and dependency notes.
• Added instructions for reading NBT payloads from events, including converting from BinaryTagHolder to CompoundBinaryTag and handling potential nulls and IO exceptions.
• Note: The adventure NBT sections should be replaced once adventure NBT gets actual documentation Document adventure-nbt #661

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
papermc-docs	✅ Ready (View Log)	Visit Preview	4135b42

[zlataovce]

looks good apart from a couple of nitpicks