[Feature]: Add tangled to themes setup

[NTBBloodbath]

Issues

• I have checked existing issues and there no existing ones with the same request.

Feature description

Right now themes can be pulled from shorthands: github, codeberg, sourcehut.

Adding tangled might come handy. Some other hosts such as gitlab could be added later too. Additional to a custom git host shorthand.

Help

Yes

Implementation help

No response