add platformio configuration

platformio.ini

@@ -0,0 +1,24 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32-c3-devkitm-1]
+platform = espressif32
+board = esp32-c3-devkitm-1
+framework = arduino
+build_flags = 
+	-DARDUINO_USB_CDC_ON_BOOT=1
+	-DARDUINO_USB_MODE=1
+board_build.partitions = partitions.csv
+
+lib_deps = 
+	aglib=symlink://../arduino
+
+[platformio]
+src_dir = examples\OneOpenAir