Support more keyboard layouts: colemak, dvorak, workman, neo, ...? #2

Describe your request

The :input layout module already has +azerty and +bepo, but there's interest in supporting other layouts:

• Support dvorak keyboard layout core#767
• Support colemak keyboard layout core#783
• Support neo2 keyboard layout core#2018
• Support Workman Keyboard Layout core#2722

This issue combines these requests into one. Unfortunately, I'm a basic QWERTY boi with no plans to switch, so my ability to assess good rebindings is limited, so PRs are not only welcome, they are needed!

Layouts

• Colemak
• Dvorak
• Workman
• Neo

Notes

• Layout support should be gated behind the appropriate flag (e.g. +dvorak, +colemak, etc), and loaded from +layout-init-h in input/layout/config.el.
• A general and/or simpler solution is preferred (perhaps something like Spacemacs' keyboard-layout layer. I welcome attempts to rewrite the module, if you're motivated to do so.
• Rebinding all of Doom's keys after-the-fact should be a last resort, but is acceptable as an intermediate.
• Even if your PR isn't used as is, it can still be a helpful reference for me to base a final implementation on.
• I suggest you wait for Doom v3. I'm phasing out general and introducing new keymaps for many of Doom's global default keys (including leader/localleader keys), both of which will impact this module (and the latter may give a general solution something to target when swapping keys).