Throttle tree-view watcher

[asiloisad]

#1189 (comment)

[asiloisad]

My problem has been solved. Additionaly, I have moved compare goal to common function to make easier deal with compare goal by community packages, e.g. tree-view-order.

[savetheclocktower]

I have to stop idly wondering out loud, making you do work, then doing something else which makes it unnecessary. :)

Try latest from updated-latest-electron — I felt this was a good opportunity to switch off of pathwatcher for this function. Initial testing seems to work fine, and watchPath already batches filesystem changes.

[savetheclocktower]

That said, I'm happy to move the comparator function to a property the way you've done in this PR — if you open a PR for that change alone I'll accept it.