Read addonlist.txt

[MerryDreambound]

Adds an dev button that reads the addonlist.txt and uses regex to extract data from it and update the enabled addons db.
Current issues:

• Not integrated with on boarding.
• It's on a dev settings location, which may confuse users.
• Overwrites profile data (Maybe we should use a currently active addons profile, to not overwrite profiles when used)

Closes #7

[MerryDreambound]

The first initial commits, are me getting used to the code base/testing stuff out, so sorry if it's messy

[pukmajster]

Looks like workshop directories ("/workshop/x.vpk") are hardcoded, which means locally installed addons present in "/addons/" will be ignored entirely. Let me know if you can whip up a fix for that.

[MerryDreambound]

I'll check up on that when I have the time, thank you

[MerryDreambound]

I had to quickly research how to install addons locally, and then create code on that, but the new changes should work if I understood local installs right and set it up correctly for testing.