Missing export doc

[NathanSnail]

Adds missing documentation for general (non local function) exports, needs ./tools/locale.lua and ./tools/build-doc.lua run.

[gemini-code-assist[bot]]

Summary of Changes

Hello @NathanSnail, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the diagnostic capabilities of the system by introducing a new check for missing documentation on exported functions, methods, and fields. It ensures that all public interfaces are adequately documented with comments, parameter, and return type annotations, thereby improving code clarity and maintainability.

Highlights

• New Diagnostic for Exported Documentation: Introduces a new diagnostic check to identify missing documentation for general (non-local) exported functions, methods, and fields.
• Expanded Diagnostic Messages: Adds specific error messages for missing comments, parameters, and return annotations for exported methods and fields in the script.lua locale file.
• Refactored Documentation Helper: The missing-doc-helper.lua file has been updated to include a more flexible checkFunctionNamed and a new checkMethod function, allowing for broader application of documentation checks.
• Dedicated Diagnostic Implementation: A new file missing-export-doc.lua is added to implement the logic for detecting and reporting missing documentation for various forms of exported functions and methods.
• Comprehensive Test Coverage: New test cases are added in test/diagnostics/missing-export-doc.lua to validate the new diagnostic across different scenarios of exported functions and methods.

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[NathanSnail]

Found a bug with this, ---@package annotation makes it think it's not documented.