Added the site selector to WebTiles.
Also finished backend for file APIs. I basically have to recreate Nekoweb APIs for now, given the similarity in having to host user files. And man, I’m recreating all this, and realize how simple everything could be. I’m making such a nice and beautiful abstractions and APIs that Nekoweb’s code lacks. And it’s super hard to refactor Nekoweb’s code now due to everything being tied weirdly. And I don’t wanna accidentally break a ton of stuff. So Nekoweb is kinda stuck with having weird abomination forever, ugh.