Fixes some games crashing.

This fixes the horizontal lines in Picross E, Cubic Ninja, Cave Story 3D and possibly others

- Centralizes color format encode/decode functions.
- Fixes endianness issues.
- Implements remaining framebuffer formats in the debugger.

This allows Virtual Console games to display properly.

Not really sure where the difference is, but some applications seem to use this 1:1 the same way...

Pica/TextureEnvironment: Add support for the MAD-like texture combiners and clean up texture environment logic.

Execute the division-by-W for perspective-correct interpolation of
values in the clipper, moving them out of the rasterization inner loop.

- Linear simply indicates that the mapped physical address is always MappedVAddr+0x0C000000, thus this memory can be used for hardware devices' DMA (such as the GPU).

The affected code is no longer limited by compiler support on that platform.

Double-clicking a texture parameter command in the pica command lists will spawn these as a new tab in the pica command list dock area.