Gracefully handle multiple people using `plandev`

If I am remotely debugging `BlueAPI` using `plandev` and another person tries to do the same it not only fails to connect on their side but also brings my connection down too. It's understandable that there is a limitation on only one person being able to use `plandev` at the same time but we should look into making potential clashes as graceful as possible.

## Acceptance Criteria
- There is some amount of investigation on what options we have in this case
- If we can make things cleaner easily we do