Adds a first skeleton for the local deb package UI. As we're in the process of refactoring the entire app to follow a more standardized riverpod-based architecture, things in this PR might change a...
It's a merged pull request made by a member. Dunno which release it'd be in. This means people can double-click deb files to install again (with a warning).
c.f. https://news.itsfoss.com/ubuntu-24-04-disappointment/
it's so annoying that these repositories are so ancient that debs are necessary at all . but it comes in handy for things like lutris, which Ubuntu and mint shipped a broken version for at least a year