test: Add a simple mcl formatting test

This should definitely get expanded overtime when we can have something
decent for formatting mcl code. For now, catch the easy things.

test.sh

@@ -58,6 +58,7 @@ if label-block "basic"; then
 	run-testsuite ./test/test-vet.sh
 	run-testsuite ./test/test-misc.sh
 	run-testsuite ./test/test-gofmt.sh
+	run-testsuite ./test/test-mclfmt.sh
 	run-testsuite ./test/test-yamlfmt.sh
 	run-testsuite ./test/test-bashfmt.sh
 	run-testsuite ./test/test-headerfmt.sh