tests: Move HLSL tests to a subdirectory.

Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Francisco Casas (@fcasas)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/248

tests/hlsl/bool-cast.shader_test

@@ -0,0 +1,48 @@
+[pixel shader]
+float4 main() : SV_TARGET
+{
+    return float4(
+        (float)(bool)0.0,
+        (float)(bool)0,
+        (float)(bool)2.0,
+        (float)(bool)2
+    );
+}
+
+[test]
+draw quad
+probe all rgba (0.0, 0.0, 1.0, 1.0)
+
+
+[require]
+shader model >= 4.0
+
+
+[pixel shader]
+uniform float4 x;
+uniform int4 y;
+
+float4 main() : SV_TARGET
+{
+    return (float4)(bool4)x + 10.0 * (float4)(int4)(bool4)y;
+}
+
+[test]
+uniform 0 float4 0.0 0.0 2.0 4.0
+uniform 4 int4 0 1 0 10
+draw quad
+probe all rgba (0.0, 10.0, 1.0, 11.0)
+
+
+[pixel shader]
+uniform bool4 b;
+
+float4 main() : sv_target
+{
+    return (float4)b + (float4)(int4)b;
+}
+
+[test]
+uniform 0 uint4 0x00000001 0x00000002 0x80000000 0x00000000
+draw quad
+probe all rgba (2.0, 2.0, 2.0, 0.0)