[Feature Request] Add additional fields to exported docs

[NyakoFox]

Right now, it's very difficult to parse the exported docs. I've mostly been able to figure stuff out, but there's a bit of information the exported JSON file does not expose, which I would like to suggest.

• A field for which class something originates from, to filter out unchanged methods/fields from parents
• A relative version of file, instead of an absolute path
• [x] A version of the description which does not include markdown for params and return values, since those are separate
• Whether a function is deprecated or not
• A way to hide a field or method from the docs export (---@nodoc?)
• Maybe a way to not export inherited fields/methods? The exported file for my project is more than a million lines long...