Other half of #2125. I don't know of any title that utilizes this instruction, but I went ahead and implemented it for completeness.
Verified the implementation with `instr__gen_vsubcuw` from #1348. Can be grabbed with:
```
git checkout origin/gen_tests -- src\xenia\cpu\ppc\testing\*vsubcuw.s
```
I don't know of any title that utilizes this instruction, but I went
ahead and implemented it for completeness.
Verified the implementation with `instr__gen_vaddcuw` from #1348. Can be
grabbed with:
```
git checkout origin/gen_tests -- src\xenia\cpu\ppc\testing\*vaddcuw.s
```
- Convert http to https, provide archive link when possible.
- Made CPU-JIT.png more readable on dark themes;
Added a white background so there isn't black text on a black
background.
