[FEAT] Ability to uninstall multiple liveries at a time

[techmasterb]

Description
deleting 30 or 40 liveries after trying them/not wanting them one by one is insanely long to do
Solution
add the ability to check as many installed liveries as required then a delete selected (like the install but backwards

Why is this the best solution?
For the lazy people, no need to sit there taking 10 seconds to uninstall each one individually

[davwheat]

Please follow the full format provided when creating an issue

[davwheat]

Thank for the feature request!

We'll be working towards adding this is the major release after the next (version 0.4.0). Version 0.3.0 is mainly bug fixes and code improvements.