[Fix] Handle shortcuts from the frontend without depending on menu

[arielj]

This PR is an adaptation of the current globalShortcuts feature, instead of using globalShorcuts that are causing issues, it uses an event listener in the frontend and based on the different combinations it sends a message to the backend to be processed

This fixes #2676 and fixes #2671

---

Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[flavioislima]

Cool, way better now. Tested here and it is working just fine!