Hqporner-api

Changelog
- switched to httpx
- removed lxml, requests from dependencies
- removed useless code from `functions.py`

- support for custom proxies (See Documentation)
- new custom caching system
- added download tests
- new caching system

- fixed stuff
- code refactoring
- typo fixes
- idk

- implemented command line interface `hqporner -h`
- changed static paging to infinite paging
- optimized imports
- added no title argument for downloading
- renamed categories to tags (for my Porn Fetch project)
- small path refactor
- typos

- changed some stuff in the code
- fixed actress function
- you can now get the thumbnails from videos