Added hotplug support from libusb

[cmaglie]

This allows for the removal of the polling thread.
Tested on Linux, seems working fine. To be tested on Mac and Windows and possibly look for alternatives.

• Tested on Linux -> ✅
• Tested on Mac -> ✅
• Tested on Windows -> ✅ (using Added devicenotification implementation go-win32-utils#4)

[umbynos]

On win:

HELLO 1 "cli"
{
  "eventType": "hello",
  "message": "OK",
  "protocolVersion": 1
}
START_SYNC
{
  "eventType": "start_sync",
  "message": "Cannot START_SYNC: Operation not supported or unimplemented on this platform",
  "error": true
}

[cmaglie]

For Windows we cannot use libusb, I've added another implementation for Windows.

The event listener has been implemented in arduino/go-win32-utils#4, once merged I will update the go.mod here to create the final version of this PR.