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/ternary.shader_test

@@ -0,0 +1,33 @@
+[pixel shader]
+uniform float4 x;
+
+float4 main() : sv_target
+{
+    return x.x ? x : x - 1;
+}
+
+[test]
+uniform 0 float4 2.0 3.0 4.0 5.0
+draw quad
+probe all rgba (2.0, 3.0, 4.0, 5.0)
+uniform 0 float4 0.0 10.0 11.0 12.0
+draw quad
+probe all rgba (-1.0, 9.0, 10.0, 11.0)
+
+[pixel shader]
+uniform float4 x;
+
+float4 main() : sv_target
+{
+    float4 ret;
+
+    ret.x = x.x ? x.x : 1;
+    ret.y = x.y ? 2 : x.y;
+    ret.z = ret.w = 0.0;
+    return ret;
+}
+
+[test]
+uniform 0 float4 1.1 3.0 4.0 5.0
+draw quad
+probe all rgba (1.1, 2.0, 0.0, 0.0)