vkd3d-shader/hlsl: Validate that statics don't contain both resources and numerics.

Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/42

tests/hlsl-invalid.shader_test

@@ -250,3 +250,17 @@ float4 main() : sv_target
     a.a = 1;
     return a.a;
 }
+
+[pixel shader fail]
+struct apple
+{
+    sampler sam;
+    float4 aa;
+};
+
+static struct apple a;
+
+float4 main() : sv_target
+{
+    return 1.0;
+}