[Keyboard] Add Baumkuchen (#20766)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/takashicompany/baumkuchen/keymaps/build_test/keymap.c

@@ -0,0 +1,33 @@
+// Copyright 2023 takashicompany (@takashicompany)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_Q, KC_W, KC_E, KC_R,
+        KC_A, KC_S, KC_D, KC_F,
+        KC_Z, KC_X, KC_C, KC_V, KC_B,
+                                KC_NO, KC_NO
+    )
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    
+    if (record->event.pressed) {
+        rgblight_toggle_noeeprom();  // for test
+    }
+
+    return true;
+}
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+
+    if (clockwise) {
+        tap_code(KC_1);
+    } else {
+        tap_code(KC_2);
+    }
+
+    return false;
+}