add platformio configuration

.gitignore

@@ -1,3 +1,4 @@
 *.DS_Store
 build
 .vscode
+.pio

partitions.csv

@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x1E0000,
+app1,     app,  ota_1,   0x1F0000,0x1E0000,
+spiffs,   data, spiffs,  0x3D0000,0x20000,
+coredump, data, coredump,0x3F0000,0x10000,

platformio.ini

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+; 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