fix(pkg/board): handle adb connection error

[lucarin91]

Motivation

We should check if the board is connected before returning an ADBConnetion object.

Change description

Use adb get-state for checking if the board is there and it is connected.

Additional Notes

• [pkg] return better error in case of device offline in adb #80

Reviewer checklist

• PR addresses 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.