* refactor(generators): Migrate lua_generator.js to TypeScript
* refactor(generators): Migrate generators/lua/* to TypeScript
* fix(generators): Fix type errors in generator functions
* refactor(generators): Migrate generators/lua.js to TypeScript
* chore(generator): Format
* chore(generators): JSDoc and formatting tweaks for PR #7654
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Co-authored-by: Christopher Allen <cpcallen+git@google.com>