Support multiple ssh keys

[Per-severance]

Is your feature request related to a problem?

I find it rather tedious that I always have to change the ssh key in Artemis if I switch between different devices.

Describe the solution you'd like

Add option to store multiple ssh keys

Describe alternatives you've considered

only use one ssh key for all my devices -> bad for security reasons

Additional context

No response

[SimonEntholzer]

Closed by #9478