[llvm] [bazel] Add mlir/utils/generate-test-checks.py to bazel overlay (PR #160693)

[Tom Murray via llvm-commits]

================
@@ -14126,3 +14127,8 @@ cc_library(
         "//llvm:Support",
     ],
 )
+
+py_binary(
+    name = "generate-test-checks",
+    srcs = ["utils/generate-test-checks.py"],
+)
----------------
TomMurray wrote:

yes of course, done, thankyou!

https://github.com/llvm/llvm-project/pull/160693