WaveShare ESP32-S3-Zero support (#90)

* Add Waveshare ESP32-S3-Zero board support

* add build `extra_flags`

* Add PSRAM build flag

* Update waveshare_esp32_s3_zero.json

---------

Co-authored-by: Jason2866 <[email protected]>

Author: kdpuvvadi

boards/waveshare_esp32_s3_zero.json

@@ -0,0 +1,41 @@
+{
+  "build": {
+    "arduino":{
+      "memory_type": "qio_qspi"
+    },
+    "core": "esp32",
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "mcu": "esp32s3",
+    "variant": "waveshare_esp32_s3_zero",
+    "extra_flags": [
+      "-DARDUINO_ESP32S3_DEV",
+      "-DARDUINO_USB_MODE=1",
+      "-DARDUINO_RUNNING_CORE=1",
+      "-DARDUINO_EVENT_RUNNING_CORE=1",
+      "-DBOARD_HAS_PSRAM"
+    ]
+  },
+  "connectivity": [
+    "bluetooth",
+    "wifi"
+  ],
+  "debug": {
+    "openocd_target": "esp32s3.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "Waveshare ESP32-S3-Zero",
+  "upload": {
+    "flash_size": "4MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://www.waveshare.com/wiki/ESP32-S3-Zero",
+  "vendor": "Waveshare"
+}