Efficient mouseless functionality

[keyserj]

Is your feature request related to a problem? Please describe. I want to be able to exercise ameliorate's functionality without a mouse - both for accessibility, and for efficiency. Specifically, at least the following should be mouseless:

• Add node
• Edit node text
• ~Edit selection's score~ already done, type 0-9 or dash when selecting a part
• View score's claim
• Go back to problem mapping from claim view
• Select node up/down/left/right of current selection
• Select edge up/down/left/right of current selection

Note: most of these can be accomplished through Vimium's [fF]-to-click functionality, but that's not as smooth as directly having shortcuts for these (and requiring Vimium for accessibility is probably not ideal).

Describe the solution you'd like VIM-mode sounds pretty awesome (e.g. "cc" to change node text, "cs" change score, "apj" add problem below, "" to enter VIM-mode). Perhaps more common hotkeys like ctrl-[char] would be good for non-vimmers too.

Describe alternatives you've considered

Additional context

Technical ideas We already use react-hotkeys-hook, which seems decent enough for this