keybinding, shortcuts for zoom and pan #3989

Is it possible to have shortcuts for interactions with the graph?

E.g. I would like to have

• panning with the arrow keys left, right, up, down
• zooming with + and -
• horizontal zooming with ctrl+left and ctrl+right
• vertical zooming with ctrl+up and ctrl+down
• unzoom both u, horizontal unzoom alt+x, vertical unzoom alt+y
• previous zoom p
• toggle grid g
• snapshot (copy as png to clibboard) ctrl+c

(partly taken from gnuplot).