fs: Add noop stub for FSWatcher.prototype.start
Motivation: In a previous PR, #29905, I made this method a private method since it had no value to the user.
There was discussion, https://github.com/nodejs/node/pull/29989, that maybe it should have been a runtime deprecation first, but was ultimatley decided that for this type of method, a noop stub was a better option.
This Adds back in the method, but as a noop stub, while also keeping the real implementation private
I wasn't sure if i should add the tests back in that were removed.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines