More Shader Gen Stuff

Mostly copied from GLSL since in terms of syntax within blocks they’re pretty similar. Likely the result will need tweaking…

Isn’t that conveniant?

“Do the simd_shuffle”

atomics

Remaining instructions

Remove removed special instructions

Getting somewhere…

src/Ryujinx.Graphics.Shader/CodeGen/Msl/HelperFunctions/VoteAllEqual.metal

@@ -0,0 +1,4 @@
+inline bool voteAllEqual(bool value)
+{
+    return simd_all(value) || !simd_any(value);
+}