fix: filter out TypeScript lib files and node_modules

[robingenz]

Fixes #46

• Excludes TypeScript standard library files (lib.dom.d.ts, lib.es2017.d.ts, etc.)
• Excludes node_modules except @capacitor packages
• Prevents internal DOM types (Event, EventTarget, EventListener, etc.) from appearing in generated documentation

[tafelnl]

This is related to #58. But in that issue I actually do want to exclude @capacitor packages as well. Would there be a workaround for this? Or maybe we just also want to exclude @capacitor here, because those types are already defined in the core docs? Not sure..

[robingenz]

@tafelnl I am currently using a patch. Feel free to copy it and adapt it.

EDIT: I would be willing to update my PR based on the feedback from the Capacitor team.