- Fixed build on Windows

[lmartorella]

Description

Fixes show-stopper build on Windows:

> go build ./...
# github.com/teslamotors/vehicle-command/pkg/connector/ble
..\..\pkg\connector\ble\ble.go:161:17: undefined: newDevice

Even if not supported for BLE, building on Windows is still possible for other targets like the tesla-http-proxy. With the proposed basic change the build is unblocked.

Invoking commands that involves BLE will be correctly report the runtime error:

> tesla-control -ble add-key-request public_key.pem owner cloud_key
Error: failed to find a BLE device: Not supported on Windows

Type of change

Please select all options that apply to this change:

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Bug fix (non-breaking change which fixes an build issue)
• Documentation update

Checklist:

Confirm you have completed the following steps:

• My code follows the style of this project.
• I have performed a self-review of my code.
• No need to update the documentation.
• No need for unit tests.

[sethterashima]

Thanks!