Userspace and keymap update for user bbaserdem. (#14484)

users/bbaserdem/bb-underglow.h

@@ -0,0 +1,28 @@
+/* Copyright 2021 Batuhan Başerdem
+ * <baserdem.batuhan@gmail.com> @bbaserdem
+ *
+ * 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/>.
+ */
+#pragma once
+#include "bbaserdem.h"
+
+/* UNDERGLOW IMPLEMENTATION
+ */
+
+// Used to initialize layer switching overlay
+void keyboard_post_init_underglow(void);
+// Used to change RGB underglow layers on keymap layer change
+layer_state_t layer_state_set_underglow(layer_state_t state);
+// Hook into shutdown to show effect on shutdown
+void shutdown_underglow(void);