graphics engine refactor and theme setup

[djh0ffman]

create brand new UI data format so graphics engine does not work from hard blits and multiple incbins. instead create a theme template and graphic tool to allow for inclusion of any theme.

currently the graphics are split into lots of tiny files and the blit functions in asm expect them to be in a particular place and a partiuclar size. also there are a lot of copper tricks on the HUD to try and save memory which we probably don't need. removing these will un-complicate the screen setup we have and also allow for easy palette configs to be loaded or even included with the theme.

[djh0ffman]

additional thought.. if this is sys friendly, need to see which approach would be best.. intuition, hard smacking the frame buffers like we already are... will take some thought and investigation.