Add seeed_xiao_esp32c6 board definition (#12307)

Co-authored-by: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>

esphome/components/esp32/boards.py

@@ -1218,6 +1218,28 @@ ESP32_BOARD_PINS = {
         "LED_BUILTINB": 4,
     },
     "sensesiot_weizen": {},
+    "seeed_xiao_esp32c6": {
+        "D0": 0,
+        "D1": 1,
+        "D2": 2,
+        "D3": 21,
+        "D4": 22,
+        "D5": 23,
+        "D6": 16,
+        "D7": 17,
+        "D8": 19,
+        "D9": 20,
+        "D10": 18,
+        "MTDO": 7,
+        "MTCK": 6,
+        "MTDI": 5,
+        "MTMS": 4,
+        "BOOT": 9,
+        "LED": 8,
+        "LED_BUILTIN": 8,
+        "RF_SWITCH_EN": 3,
+        "RF_ANT_SELECT": 14,
+    },
     "sg-o_airMon": {},
     "sparkfun_lora_gateway_1-channel": {"MISO": 12, "MOSI": 13, "SCK": 14, "SS": 16},
     "tinypico": {},