Use Homebrew and Unknown region flags

[NABN00B]

Draws the Free Spreech Flag for (what we detect as) Homebrew and a question mark flag for Internal, Test, Diagnostic tool and Unknown regions. Unknown kind of covers everything that isn't a PSP ISO.

Before merging, we need to consider whether this is needed or wanted at all. Users who play a lot of homebrew might find it annoying.

(In the screenshots I've used the images.svg file supplied at this time from the repo. Size, colors and UI position of the flags may or may not be changed in the future.)

[NABN00B]

Oops, I meant to open this as DRAFT -- there are things to consider.

[NABN00B]

I did have a draft for an icon to be drawn for GE dumps, so as not to recycle the question mark flag everywhere, but because hrydgard hadn't merged that into the svg, I didn't code that.

[hrydgard]

Ah so that's what the teapot was for! Though, a teapot isn't really much related to a game framedump... it's more of a general graphics programming trope.

On another note, not a huge fan of the "free speech flag" aesthetically. Might come up with something different for homebrew...

[NABN00B]

I'm not sure why but the region checks are also run for save data, and for some reason always gets detected as homebrew. Idk why the ID turns into -. I haven't checked the code yet.

Something should be done about this one way or another. I can see several ways this can be solved, depending on what we want.