Manage connection parameter for device create

[mirkokurt]

Motivation

We want to allow the user to create a device with the selected connectivity when more than one connectivity is avilable

Change description

• Go client updated
• "connection" parameter added to the device create command

Additional Notes

Reviewer checklist

• PR address a single concern.
• PR title and description are properly filled.
• Changes will be merged in main.
• Changes are covered by tests.
• Logging is meaningful in case of troubleshooting.
• History is clean, commit messages are meaningful (see CONTRIBUTING.md) and are well formatted.

[pennam]

./arduino-cloud-cli device create --name opta-cli --fqbn arduino:mbed_opta:opta --connection eth
name: opta-cli
id: 4e9dc621-c03e-42b6-8ca9-cf9f5f991ba2
board: opta
serial_number: 003000323431510637383732
fqbn: arduino:mbed_opta:opta

🎉

./arduino-cloud-cli ota upload --device-id 4e9dc621-c03e-42b6-8ca9-cf9f5f991ba2 --file /tmp/arduino_build_463789/Blink.ino.bin 

🎉