Added snap click, per-key/mixed rgb, custom debounce, wireless config feature

keyboards/keychron/common/snap_click/snap_click.h

@@ -0,0 +1,43 @@
+/* Copyright 2024 @ Keychron (https://www.keychron.com)
+ *
+ * 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
+
+typedef struct __attribute__((__packed__)) {
+    uint8_t type;
+    uint8_t key[2];
+} snap_click_config_t;
+// size  = 3 bytes
+
+typedef union {
+    uint8_t state;
+    struct {
+        uint8_t state_key_1:1;
+        uint8_t state_key_2:1;
+        uint8_t last_single_key_1:1;
+        uint8_t last_single_key_2:1;
+        uint8_t reserved:4;
+    };
+    struct {
+        uint8_t state_keys:2;
+        uint8_t last_single_key:2;
+        uint8_t reserved2:4;
+    };
+} snap_click_state_t;
+
+void snap_click_config_reset(void);
+void snap_click_rx(uint8_t *data, uint8_t length);
+