Add MatrixPortal S3 to Build Platforms

Author: makermelissa

build_platform.py

@@ -74,6 +74,7 @@
     "feather_esp32s3" : ["esp32:esp32:adafruit_feather_esp32s3_nopsram", "0xc47e5767", None],
     "feather_esp32s3_4mbflash_2mbpsram" : ["esp32:esp32:adafruit_feather_esp32s3", "0xc47e5767", None],
     "feather_esp32s3_tft" : ["esp32:esp32:adafruit_feather_esp32s3_tft", "0xc47e5767", None],
+    "matrixportal_s3" : ["esp32:esp32:adafruit_matrixportal_esp32s3", "0xc47e5767", None],
     "qtpy_esp32s3" : ["esp32:esp32:adafruit_qtpy_esp32s3_nopsram", "0xc47e5767", None],
     "qtpy_esp32" : ["esp32:esp32:adafruit_qtpy_esp32_pico", None, None],
     "qtpy_esp32c3" : ["esp32:esp32:adafruit_qtpy_esp32c3:FlashMode=qio", None, None],