Added board ESP32-PICO-DevKitM-2 (platformio#1254)

Co-authored-by: Dominic Pearman <dominic@phymorous.de>

Author: djpearman

boards/esp32-pico-devkitm-2.json

@@ -0,0 +1,37 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "esp32_out.ld"
+    },
+    "core": "esp32",
+    "extra_flags": [
+      "-DARDUINO_ESP32_PICO_DEVKITM_2",
+      "-DBOARD_HAS_PSRAM"
+    ],
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "mcu": "esp32",
+    "variant": "esp32"
+  },
+  "connectivity": [
+    "wifi",
+    "bluetooth",
+    "ethernet",
+    "can"
+  ],
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "Espressif ESP32-PICO-DevKitM-2",
+  "upload": {
+    "flash_size": "8MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "speed": 921600
+  },
+  "url": "https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-pico-devkitm-2.html",
+  "vendor": "Espressif Systems"
+}