Add more location aliasing checks

When location aliasing, the aliases sharing the location must have the same underlying numerical type and bit width (floating-point or integer, 32-bit versus 64-bit, etc.) and the same auxiliary storage and interpolation qualification.
This adds checks for the "patch" and "sample" qualifiers, and also relaxes the checks when the signedness of integer types differs.

gtests/AST.FromFile.cpp

@@ -314,6 +314,9 @@ INSTANTIATE_TEST_SUITE_P(
         "index_outside_sample_mask_range.frag",
         "positive_infinity.frag",
         "matrixCompMult.vert",
+        "ps_uint_int.frag",
+        "ps_sample.frag",
+        "tes_patch.tese",
     })),
     FileNameAsCustomTestSuffix
 );