Paintings!

Changes since last version:

• All previously AI-generated paintings have been replaced with ones made by myself. Most of them reference the old AI-generated painting, but there are also a few completely new paintings in there. More changes to come, possibly.
• A bunch of new textures added, most of them are as-of-yet unused.
• A new map was added, it is only accessible through cheats at the moment.
• The sprite for the matter shard has been updated.

The changes to the paintings mean that some of the paintings in the gallery will look cut off. I will fix the randomizer script and run it again before next update.