[Suggestion] Add an "About" menu

[diogo-rossi]

Adds a "About" menu to see information about

• The current installed version
• The address of this repository

I only found the path to this repository by search my Github history subscription. I couldn't find this address from inside the application. So, this would be good the get new users/contributors

[omeryanar]

About menu is added iv v3.8