* Migrate `LAYOUTS` to data driven, 0-9
* Migrate `LAYOUTS` to data driven, A
* Migrate `LAYOUTS` to data driven, B
* Migrate `LAYOUTS` to data driven, C
* Migrate `LAYOUTS` to data driven, D
* Migrate `LAYOUTS` to data driven, E
* Migrate `LAYOUTS` to data driven, F
* Migrate `LAYOUTS` to data driven, G
* Migrate `LAYOUTS` to data driven, H
* Migrate `LAYOUTS` to data driven, handwired
* Migrate `LAYOUTS` to data driven, I
* Migrate `LAYOUTS` to data driven, J
* Migrate `LAYOUTS` to data driven, K
* Migrate `LAYOUTS` to data driven, L
* Migrate `LAYOUTS` to data driven, M
* Migrate `LAYOUTS` to data driven, N
* Migrate `LAYOUTS` to data driven, O
* Migrate `LAYOUTS` to data driven, P
* Migrate `LAYOUTS` to data driven, Q
* Migrate `LAYOUTS` to data driven, R
* Migrate `LAYOUTS` to data driven, S
* Migrate `LAYOUTS` to data driven, T
* Migrate `LAYOUTS` to data driven, U
* Migrate `LAYOUTS` to data driven, V
* Migrate `LAYOUTS` to data driven, W
* Migrate `LAYOUTS` to data driven, X
* Migrate `LAYOUTS` to data driven, Y
* Migrate `LAYOUTS` to data driven, Z
* keeb68.h: use QMK 3-character notation
* physically arrange layout macro
Moves the keycodes for Equals and Right Bracket to their proper places on the Number and Tab rows, respectively.
Also refactors the keymaps to use QMK-native keycode aliases, grid alignment, and four-space indent.
* move `keymaps/grv_esc/readme.md` to `keymaps/default/`
The file contents say "default keymap".
* enable Community Layouts support
* add QMK Configurator data
* touch-up `rules.mk`
