[Keyboard] Added Boardwalk keyboard (#5195)
* initial commit
* removed key for fn layer
* added missing row, misc cleanup
* added nchristus keymap, more misc cleanup
* Updating ergo60.h, rules
* Adding McAllaster keymap
* added a bunch of keymaps
* added LED code
* added userspace
* ls vitamins keymap
* added Boardwalk keyboard
* boardwalk: removed unrelated files
* boardwalk: undoing tkc1800 change
* boardwalk: undoing tkc1800 change
* nchristus keymap cleanup
* boardwalk: updates per PR feedback
* boardwalk: updated bootloader
* boardwalk: additional updates from PR review
Nick Christus
5838c458d7