Enable key modifiers for custom keybinds

[thedyze]

Is your feature request related to a problem? Please describe.

In the game there currently exists some keybinds which use modifiers by default (e.g Ctrl+M). However, I have not been able to add a custom keybind using a modifier.

Describe the solution you'd like

Enabling modifiers would simplify some actions alot.

For example, 'Move view' keybinds currently have a pretty weird layout, far from where your hands sit by default. Using modifiers you could bind these to say 'Shift+moveDirectionKey' which would be a lot more intuitive.

Additional context

No response