Atomic Refactor (#13761)

* info.json: human-friendly formatting

- one key per line
- line breaks between physical rows
- four-space indent

* info.json: add data for LAYOUT_grid

* fix keymap paths

This commit corrects the paths for three keymaps that were in the wrong directory.

* refactor and bugfix abienz keymap

- remove extra commas
- use QMK-native aliases for KC_TRNS and KC_NO
- add include for Colemak keycode support
- use four-space indent

* refactor and bugfix michelle keymap

- remove inline comments for keymap layout
- remove extra commas
- use QMK-native aliases for KC_TRNS and KC_NO
- use four-space indent

* refactor and bugfix twolayer keymap

- remove extra commas
- refactor action_get_macro() keycode to QMK-native keycode
- use QMK-native aliases for KC_TRNS
- use four-space indent
- adjust grid alignment

* rename LAYOUT_grid to LAYOUT_ortho_5x15

* refactor config.h file

- use #pragma once include guard
- update MANUFACTURER and PRODUCT strings to be consistent with other OLKB boards
- remove Magic config (all settings are default)

* refactor atomic.c

- add license header
- use GPIO control functions

* refactor atomic.h

- add license header
- use #pragma once include guard
- remove redundant file includes

* refactor rules.mk

- remove Bootloader selection comments
- unify Build Option header comment to QMK template
- unify Build Option rules and inline comments

* alias LAYOUT_grid to LAYOUT_ortho_5x15

keyboards/atomic/keymaps/michelle/keymap.c

@@ -0,0 +1,25 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_ortho_5x15( /* Dvorak */
+        KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_LBRC, KC_RBRC, KC_BSPC, XXXXXXX,
+        KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_SLSH, KC_EQL,  KC_INS,  KC_DEL,
+        KC_CAPS, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_MINS, KC_ENT,  XXXXXXX, KC_PGUP,
+        KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_RSFT, XXXXXXX, KC_UP,   KC_PGDN,
+        KC_LCTL, MO(1),   XXXXXXX, KC_LALT, XXXXXXX, XXXXXXX, KC_SPC,  XXXXXXX, XXXXXXX, XXXXXXX, KC_LGUI, MO(2),   KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [1] = LAYOUT_ortho_5x15( /* Qwerty + F keys */
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_BSPC, XXXXXXX,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_INS,  KC_DEL,
+        KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,  XXXXXXX, KC_PGUP,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, XXXXXXX, KC_UP,   KC_PGDN,
+        KC_LCTL, _______, XXXXXXX, KC_LALT, XXXXXXX, XXXXXXX, KC_SPC,  XXXXXXX, XXXXXXX, XXXXXXX, KC_LGUI, _______, KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [2] = LAYOUT_ortho_5x15( /* Numpad + qwerty shortcut keys */
+        KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_P7,   KC_P8,   KC_P9,   KC_0,    KC_LBRC, KC_RBRC, KC_BSPC, XXXXXXX,
+        KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_P4,   KC_P5,   KC_P6,   KC_L,    KC_SLSH, KC_EQL,  KC_INS,  KC_DEL,
+        KC_CAPS, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_P1,   KC_P2,   KC_P3,   KC_S,    KC_MINS, KC_ENT,  XXXXXXX, KC_PGUP,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_X,    KC_B,    KC_P0,   KC_P0,   KC_PENT, KC_Z,    KC_RSFT, XXXXXXX, KC_UP,   KC_PGDN,
+        KC_LCTL, _______, XXXXXXX, KC_LALT, XXXXXXX, XXXXXXX, KC_SPC,  XXXXXXX, XXXXXXX, XXXXXXX, KC_LGUI, _______, KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+};