EFI Shoot 'em up

Added application state functionality, to determine what state is currently loaded, and thus allowing for multiple scenes and transitions, etc

Added back the graphic output and framebuffer functionality. This should finish the boilerplate I needed to do before working on the actual content

Worked on a small file wrapper, since we don’t have a standard library and some mechanics I need to do are a bit quirky

Added some vendor code for reading PNGs. Hard part was adjusting it to not use the C standard library and instead use some custom implementations for memory allocations and such

Started work on a new uEFI project, this time on a Shoot ’em up kind of thing. The flapyp bird I previously did was not very high quality, considering I had to work with bitmaps, but I might try to make a bit better engine to work this on.