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/max.shader_test

@@ -0,0 +1,50 @@
+[pixel shader]
+float4 main(uniform float2 u) : sv_target
+{
+    return float4(max(u.x, u.y), max(2, 2.1), max(true, 2), max(-1, -1));
+}
+
+[test]
+uniform 0 float4 0.7 -0.1 0.0 0.0
+draw quad
+probe all rgba (0.7, 2.1, 2.0, -1.0)
+
+
+[pixel shader]
+float4 main(uniform float4 u) : sv_target
+{
+    float3 a = float3(-0.1, 0.2, 0.3);
+
+    return float4(max(u.xy, u.zw), max(a, u.xy));
+}
+
+[test]
+uniform 0 float4 0.7 -0.1 0.4 0.8
+draw quad
+probe all rgba (0.7, 0.8, 0.7, 0.2)
+
+
+[pixel shader]
+float4 main() : sv_target
+{
+    float2x3 a = {1, 2, 3, 4, 5, 6};
+    float3x2 b = {6, 5, 4, 3, 2, 1};
+
+    float2x2 r = max(a, b);
+    return float4(r);
+}
+
+[test]
+draw quad
+probe all rgba (6.0, 5.0, 4.0, 5.0)
+
+
+[pixel shader fail]
+float4 main() : sv_target
+{
+    float2x2 a = {1, 2, 3, 4};
+    float4 b = {4, 3, 2, 1};
+
+    max(a, b);
+    return 0;
+}