Install pre-build risc-v gcc

Arm build (#14)

Bump-up SDK version and add test for PICO2W (#12)

Upgrade pico-sdk and picotool to 2.1.0 version

Minor build warning fix

Raspberry Pi Pico 2 support

Debugging instruction

Dev container tutorial

Test freertos_test_project build

Add FreeRTOS to container image and demo project

Specify the C and C++ compiler path

Update CI status badge

Add Github CI configuration

Update SDK to 1.5.1 version and picotool to 1.1.2

Update README.md