Beta update, Gallery overhaul

Sorry, this is not a content update.
This time I changed the Gallery code so much, it's basically a complete overhaul. I've tested everything and had a few other people try it by sending them the new gallery script and everything seems to work, but without updating the full game (several script-files have changed and some image names), I can't really be a 100% sure, so to the Beta branch it goes.

I've had a lot of trouble with the old gallery, the code was a mess (well it still is tbh, but it's a lot better than before), it desperately needed an overhaul, so I did that, changed a lot of code, optimised a few things, shortened and/or combined some of the code, changed the design slightly, etc..

There are also a few new images and some that I had to change/replace, since there was no possible way to get them without using the dev console, for those you might need to replay the specific scene for them to show up.

Aside from the gallery I've added 2 new animations and a few render to the latest Kat scene (male MC only for now). This is no content update, but since I had them done and ready I thought I'll include them as a small encouragement ;)

Have fun and as usual, if you find any bugs or errors, let me know!