[Keyboard] Add Baumkuchen (#20766)

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

keyboards/takashicompany/baumkuchen/baumkuchen.c

@@ -0,0 +1,19 @@
+// Copyright 2023 takashicompany (@takashicompany)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "quantum.h"
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    
+    if (!encoder_update_user(index, clockwise)) {
+      return false;
+    }
+    
+    if (clockwise) {
+        tap_code(KC_WH_D);
+    } else {
+        tap_code(KC_WH_U);
+    }
+    
+    return true;
+}