Implement Autoscanning when new games are added

[JMTK]

Problem

Right now you have to manually re-run this any time a new game is added

Solution

Implement this as a scheduled task/Windows Service/background task that can periodically scan for new apps and add them

[profgyuri]

Hi! I think this issue could benefit from using FileSystemWatcher class, but the scanning logic should be seperated just so it can be reused in multiple places, because (if I'm correct) it currently scans all or nothing and my proposed solution would scan the newly added folder only.

[JMTK]

That makes sense. If it was FileSystemWatcher it would have to be running as a service constantly in the background, or at least just re-running the main function periodically since it is already incremental