Add Keychron C2 Pro (#20701)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: adophoxia <100170946+adophoxia@users.noreply.github.com>
Co-authored-by: jack <0x6a73@protonmail.com>

keyboards/keychron/c2_pro/info.json

@@ -0,0 +1,26 @@
+{
+    "keyboard_name": "Keychron C2 Pro",
+    "manufacturer": "Keychron",
+    "url": "https://github.com/Keychron",
+    "maintainer": "lalalademaxiya1",
+    "processor": "STM32L432",
+    "bootloader": "stm32-dfu",
+    "usb": {
+        "vid": "0x3434"
+    },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "dip_switch": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
+    "matrix_pins": {
+        "cols": ["A10", "A9", "A8", "B1", "B0", "A7", "A6", "A5", "A4", "A3", "A2", "NO_PIN", "NO_PIN", "NO_PIN", "NO_PIN", "NO_PIN", "NO_PIN", "NO_PIN", "NO_PIN", "C14"],
+        "rows": ["B5", "B4", "B3", "A15", "A14", "A13"],
+        "custom_lite": true
+    },
+    "diode_direction": "ROW2COL"
+}