Feature Request: Support for SyntaxSet add_from_folder to Add Custom Syntaxes

[0xJWLabs]

Hi there,

I would like to suggest adding support for the SyntaxSet method add_from_folder on the generator to enable the addition of custom syntaxes. This would be particularly useful for languages like Luau and others that may not be included by default, since luau supports types so the syntax would be difference from lua.

Implementing this feature would allow users to easily extend the syntax highlighting capabilities by adding custom syntax definitions from a folder, enhancing the flexibility and usability of the tool.