stubbed out CRTP shaders

TODO

@@ -8,4 +8,8 @@
 [ ] implement more primatives
 [ ] fix off by one with buffer shader (and probably certain primatives)
 [ ] fix memory leak and arrays in stack issue
-[ ] fix shader offset limitations and headache
+[ ] fix shader offset limitations and headache
+[ ] maybe add blitter primative?
+[ ] support for lower color depths
+[ ] support for transparency
+[ ] 15bpp + dither "shader"