DOIO KB30 Refactor (#21250)

* refactor keymaps

- remove extra blank lines
- convert tabs to spaces
- use four-space indent
- grid-align keycodes
- use QMK-native keycode aliases

* info.json: correct layout data

* add readme.md

* info.json: correct maintainer field

Updates the value to reference the maintainer's GitHub username.

keyboards/doio/kb30/keymaps/via/keymap.c

@@ -15,10 +15,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-
 #include QMK_KEYBOARD_H
 
-
 enum layer_names {
     _LAY0,
     _LAY1,
@@ -26,13 +24,9 @@ _LAY2,
     _LAY3
 };
 
-
-
-
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   [_LAY0] = LAYOUT(
-		KC_NUM, KC_PSLS, KC_PAST, KC_PMNS, KC_PSCR, KC_SCRL, KC_PAUSE,
+        KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,          KC_PSCR, KC_SCRL, KC_PAUS,
         KC_P7,   KC_P8,   KC_P9,   KC_PPLS,          KC_INS,  KC_HOME, KC_PGUP,
         KC_P4,   KC_P5,   KC_P6,                     KC_DEL,  KC_END,  KC_PGDN,
         KC_P1,   KC_P2,   KC_P3,   LT(3,KC_PENT),             KC_UP,
@@ -62,7 +56,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 
-
 #ifdef ENCODER_MAP_ENABLE
 const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
     [_LAY0] = { ENCODER_CCW_CW(KC_MPRV, KC_MNXT), ENCODER_CCW_CW(KC_PGUP, KC_PGDN), ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },