Skip YUV texture dumping

[nexus382]

###What I changed / why

FMV stuff was blasting the texture dump folder with tons of throwaway frames.
-I added a small guard so texture dumping skips YUV textures, since those are typically the video frames.

• Added toggle to "DISABLE YUV DUMPING" and added a description of what EXACTLY it is doing.

###Result
-Normal texture dumping stays on.
-YUV (video) textures don’t get dumped, so FMVs don’t spam the dump folder or make things choppy.

###Notes
-This is a simple, targeted tweak in the texture dump path.

###TO DO
Add toggle [ X ]
Test Test Test

[nexus382]

Unintended bonus: Any FMV that has YUV flag activate, HAS NO JITTER when watching and dump is on. This makes FMV's so hard to watch and imerse in, but now, ou can dump, and enjoy your YUV FMVs smooth as butter.