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/uav-rwstructuredbuffer.shader_test

@@ -0,0 +1,57 @@
+[require]
+shader model >= 5.0
+
+[pixel shader todo]
+struct s
+{
+    float3 a;
+};
+
+struct s2
+{
+    float4x4 f1, f2, f3;
+};
+
+RWStructuredBuffer<float4> u : register(u2);
+RWStructuredBuffer<float> u1;
+RWStructuredBuffer<float2x2> u2;
+RWStructuredBuffer<struct s> u3;
+RWStructuredBuffer<float4x4> u4;
+RWStructuredBuffer<struct s2> u5;
+
+float4 main() : sv_target1
+{
+    u[0] = float4(11.1, 12.2, 13.3, 14.4);
+    return 0;
+}
+
+% Array type
+[pixel shader]
+typedef float arr[2];
+RWStructuredBuffer<arr> u;
+
+float4 main() : sv_target1
+{
+    return 0;
+}
+
+% Object types
+[pixel shader fail]
+RWStructuredBuffer<Texture2D> u;
+
+float4 main() : sv_target1
+{
+    return 0;
+}
+
+[pixel shader fail]
+struct s
+{
+    Texture2D t;
+};
+RWStructuredBuffer<struct s> u;
+
+float4 main() : sv_target1
+{
+    return 0;
+}