shader_recompiler,video_core: Cleanup some GCC and Clang errors

Mostly fixing unused *, implicit conversion, braced scalar init,
fpermissive, and some others.

Some Clang errors likely remain in video_core, and std::ranges is still
a pertinent issue in shader_recompiler

shader_recompiler: cmake: Force bracket depth to 1024 on Clang
Increases the maximum fold expression depth

thread_worker: Include condition_variable

Don't use list initializers in control flow

Co-authored-by: ReinUsesLisp <reinuseslisp@airmail.cc>

src/shader_recompiler/frontend/maxwell/translate/impl/double_multiply.cpp

@@ -21,9 +21,9 @@ void DMUL(TranslatorVisitor& v, u64 insn, const IR::F64& src_b) {
 
     const IR::F64 src_a{v.ir.FPAbsNeg(v.D(dmul.src_a_reg), false, dmul.neg != 0)};
     const IR::FpControl control{
-        .no_contraction{true},
-        .rounding{CastFpRounding(dmul.fp_rounding)},
-        .fmz_mode{IR::FmzMode::None},
+        .no_contraction = true,
+        .rounding = CastFpRounding(dmul.fp_rounding),
+        .fmz_mode = IR::FmzMode::None,
     };
 
     v.D(dmul.dest_reg, v.ir.FPMul(src_a, src_b, control));