[Suggestion] Add more commands to the right-click menu

[heitorpicalhos]

Currently as of version 2.0.0 you have to right-click in the specific database number on the left tree view to be able to create new keys. I think this options should be added to the right-click menu when clicking on the keyspace as well (the right side of the view) much more like how Windows Registry Editor (regedit.exe) works.