Add quick access for debug consoles

We have special command palette prefixes to access parts of the vscode UI. For example, enter `term ` to see a list of terminals:

<img width="642" alt="image" src="https://user-images.githubusercontent.com/323878/173117317-54385148-c45f-4901-84a3-259b356a6d98.png">

We should do the same for debug consoles