GUI: Add PPU threads to debug tab [Experimental]

[elad335]

I've put warnings for dumb users to not mess with this setting as well.

[Nekotekina]

Why do we need it on debug tab? Regardless of big red warning, it will be used in the most stupid way...

[Megamouse]

Wrong name

[Megamouse]

Suggested change

	<string>PPU Threads Count</string>
	<string>PPU Thread Count</string>

[Nekotekina]

Fixed conflicts, if it's a convenient feature for someone, okay then.

[ruthan]

My 2 cents. Logically debug tab should be used for 2 things only:

1. Developers only whatever they want to use add..
2. For users getting more information to help developers.. and for testing of special features which not fully integrated.

There should some checkbox etc.. to even show this settings with info, that is for points above.. Normal users shouldnt use (be forced to use these to make games running) these at all.

[dio-gh]

The Debug tab is already meant to be used that way; you need to edit an .ini file manually to even enable the tab in the first place. But this doesn't mean people will actually heed to these guidelines. You can lay down rules all you want, as long as people can find a way to violate them, they will. Especially if they get comfy youtube tutorials on the side, instructing them to do so.

Some features also exist in this weird limbo between being extremely niche, and being useful in those niche cases even for regular users. Such options include: CPU Blit, High Precision Z, Accurate GETLLAR, and then some. One could argue that these should be moved to the Advanced tab then - I made that argument before myself while I still had staff channel access, but these are ultimately indeed very sparingly useful. At that point, it becomes a UI/UX design question, since you can't just keep bloating user-facing tabs without end.

In any case, I don't think this discussion is best to be had under this PR (it's more Discord territory). The PR is already merged, and there's nothing wrong with it fundamentally. Just exposes one of the many niche PPU options, that used to be config-file-only before.