feat(theseus): add category filter to mods within instance

[ToBinio]

This PR adds a category selector to the mod's view

this would lay the groundwork to close #1091, #1059, #875 I would add further filter options in additional PRs so this one does not get too big

currently when all is selected as a project type all possible categories are shown. This is kinda of a lot so maybe the category filter should only be shown when some specific project type is chosen. But I think this would kinda hide the feature and people would think that the filters don't exist. An alternative "fix" would be to only show categories that some project uses.

reopen of #1158