Add Doio KB04 (#22754)

Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/doio/kb04/keymaps/default/keymap.c

@@ -0,0 +1,48 @@
+/* Copyright 2022 filmstarr <https://github.com/filmstarr>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+ 
+ #include QMK_KEYBOARD_H
+
+enum layer_names {
+    _LAY0,
+    _LAY1
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+/*
+       L0:
+       ┌───┬───┬───┬───┐   ┌───┐
+       │MO1│Prv│Ply│Nxt│   │Mut│
+       └───┴───┴───┴───┘   └───┘
+       L1:
+       ┌───┬───┬───┬───┐   ┌───┐
+       │   │Hud│Tog│Mod│   │   │
+       └───┴───┴───┴───┘   └───┘
+*/
+    [_LAY0] = LAYOUT(
+        MO(_LAY1),   KC_MPRV,    KC_MPLY,    KC_MNXT,     KC_MUTE
+    ),
+    [_LAY1] = LAYOUT(
+        KC_TRNS,     RGB_HUD,    RGB_TOG,    RGB_MOD,     KC_TRNS
+    )
+};
+
+#ifdef ENCODER_MAP_ENABLE
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
+    [_LAY0] = { ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
+    [_LAY1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) }
+};
+#endif