Add variant Arduino Nesso-N1 (#345)

Author: tyeth

boards/arduino_nesso_n1.json

@@ -0,0 +1,31 @@
+{
+  "build": {
+    "core": "esp32",
+    "f_cpu": "160000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "mcu": "esp32c6",
+    "variant": "arduino_nesso_n1"
+  },
+  "connectivity": [
+    "bluetooth",
+    "wifi"
+  ],
+  "debug": {
+    "openocd_target": "esp32c6.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "Arduino Nesso-N1",
+  "upload": {
+    "flash_size": "16MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 16777216,
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://store.arduino.cc/products/nesso-n1",
+  "vendor": "Arduino"
+}