Closes#8628
Release Notes:
- Added support for resizing the current pane using vim keybinds with
the intention to follow the functionality of vim
- "ctrl-w +" to make a pane taller
- "ctrl-w -" to make the pane shorter
- "ctrl-w >" to make a pane wider
- "ctrl-w <" to make the pane narrower
- Changed vim pre_count and post_count to globals to allow for other
crates to use the vim count. In this case, it allows for resizing by
more than one unit. For example, "10 ctrl-w -" will decrease the height
of the pane 10 times more than "ctrl-w -"
- This pr does **not** add keybinds for making all panes in an axis
equal size and does **not** add support for resizing docks. This is
mentioned because these could be implied by the original issue
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Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
