vkd3d-shader/hlsl: Consider register() as manual packing for resource fields.

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/106

tests/cbuffer.shader_test

@@ -607,7 +607,7 @@ float4 main() : sv_target
 }
 
 % register() can be used instead of packoffset().
-[pixel shader todo]
+[pixel shader]
 cbuffer buffer
 {
     float4 foo : packoffset(c0);
@@ -619,7 +619,7 @@ float4 main() : sv_target
     return 0;
 }
 
-[pixel shader todo]
+[pixel shader]
 cbuffer buffer
 {
     float4 foo : packoffset(c0);
@@ -632,7 +632,7 @@ float4 main() : sv_target
 }
 
 % Using register() alone is considered manual packing for resources, so the other fields expect packoffset().
-[pixel shader fail todo]
+[pixel shader fail]
 cbuffer buffer
 {
     float4 foo;
@@ -644,7 +644,7 @@ float4 main() : sv_target
     return 0;
 }
 
-[pixel shader fail todo]
+[pixel shader fail]
 cbuffer buffer
 {
     float4 foo;