Update RemoteCacheSync to send only the changes made since the previous sync to the server.

[zer0dss]

Currently edsl sends two times the user's full cache when running a remote job.
If the user has the remote cache option enabled then the RemoteCacheSync class will run the methods enter and exit that will check for differences between local cache and remote cache. The methods call the verification by sending the entire local cache which is not optimal.

edsl/edsl/data/RemoteCacheSync.py

Line 90 in 8cf255c

def __enter__(self) -> "RemoteCacheSync":