grammar: Handle TypeCooperativeMatrixKHR as type

Without this shaders with cooperative matrix types fail to parse.

Author: MarijnS95

rspirv/grammar/reflect.rs

@@ -66,6 +66,7 @@ pub fn is_type(opcode: spirv::Op) -> bool {
             | spirv::Op::TypeAccelerationStructureKHR
             | spirv::Op::TypeRayQueryKHR
             | spirv::Op::TypeForwardPointer
+            | spirv::Op::TypeCooperativeMatrixKHR
     )
 }