practice revert and cherry pick, and sub-module

after qwuitting the job file, we use git revert on the commit id and then the file is deleted(after the message telling you that)

but the history remains

next, we decided that we do want to quit- so we use

git cherry-pick which is the id of the quit txt file

and then the file is back on the menu.

submodule we took from the repo sub-module and we used : git submodule add <https......./sub-module.git sub-module <<< this is just folder name