[Feature:RainbowGrades] Make local_pull, local_push command

[ziesski]

Closes #Submitty/Submitty/issues/10457

Currently make pull & push faces some rsync error as shown on screenshot above.
For reference, it used to run with root, we just had to set password for submitty_daemon.

From dev env, it is basically copying the directories, so new commands cp_pull & cp_push are introduced.

[bmcutler]

Looks good. Just do a bit of stress testing and make sure the copy works repeatedly (that it doesn't make nested copies of the files). Also, consider switching to rsync (will be a little faster if the files already exist or only need minor updates).

[ziesski]

Looks good. Just do a bit of stress testing and make sure the copy works repeatedly (that it doesn't make nested copies of the files). Also, consider switching to rsync (will be a little faster if the files already exist or only need minor updates).

Renamed the cp_push and cp_pull to local_push & local_pull as we are no longer using cp command. Updated the title accordingly for future reference purposes.

switched to rsync, and used -azPq flag, azP is same as the original make pull & push, but added q flag is for suppressing the output messages. Otherwise each json and html files names will be printed which is a lot. But @bmcutler if you disagree and think we should output all information, feel free to edit my commit (just remove q flag) and merge.
I am adding screenshot of both with and without the q flag.