use arduino-cli as library in cslt-tool

[fstasi]

We could integrate the usage of arduino-cli as a library (as arduino-cloud-cli does), this way we can remove all the dependencies (arduino-cli itself and gcc-ar) and leverage the installation of the tools using the CLI itself. See https://github.com/arduino/arduino-cloud-cli/blob/24b4410c2fcd6287e83967e6dede83caccce63a4/arduino/cli/commander.go