RFC g and gg to jump to top and bottom

### Is your feature request related to a problem? Please describe.
Implement additional Vim key bindings to jump to top and bottom. `<` and `>` is not intuitive.

### Describe the solution you'd like
g jumps to top

### Describe alternatives you've considered
Other common keybindings also do not work, eg. super + up

### Additional context
I'll need to do more research. Eg. can I add multiple key mappings, is there a reason `g` was not used, etc.

> You may be able to add your desired feature with a custom command. Check out the examples here:

I feel strongly this is core.

I can implement a PR if there are no concerns.