[compiler] allow local fixtures to be excluded from git w "nocommit" prefix

ghstack-source-id: 1f06f3e
Pull Request resolved: facebook/react#33178

Author: josephsavona

compiler/.gitignore

@@ -6,6 +6,9 @@
 debug/
 target/
 
+nocommit*.js
+nocommit*.expect.md
+
 # These are backup files generated by rustfmt
 **/*.rs.bk