[Feature request] Alternate hotkeys for tab navigation

[wojtulace]

Is your feature request related to a problem? Please describe.
Opening the previous/next tab using a keyboard is only possible via Ctrl+Shift+Tab/Ctrl+Tab.

Describe the solution you'd like
I'd like a secondary key combo to be added, which is Ctrl+PageDown/Ctrl+PageUp

Describe alternatives you've considered
None.

Additional context
Many programs have that exact secondary combo, for example Chrome, Firefox, Notepad++.