[ENG-814] Explorer keyboard shortcuts

[utkubakir]

Mouse4 and Mouse5 as well as “Alt+Left” and “Alt+Right” to “Navigate back” and “Navigate forward” respectively. It might make sense to have “Alt+Up” be “Go to parent directory”.

read this:

https://github.com/spacedriveapp/spacedrive/discussions/1014

_{From SyncLinear.com | ENG-814}