Add shortcut to rotate view-up by 90degrees

[mwestphal]

Context F3D support rotating camera by 90 degrees by pressing dedicated bindings. Hoever, this does not rotate the view-up. It would be nice to be able to do that.

Suggested solution

• Add new bindings in F3D on Ctrl+4 and Ctrl+6 to rotate the view-up +/- 90 degrees.
• Implement the bindings using a command, reloading the scene will be needed
• Update/Add tests

a bit more info here: https://gitlab.kitware.com/f3d/f3d/-/issues/144

[lknknm]

Hello! As stated on Discord, I'm currently tackling this issue.