Resolve "Update RccTransmissionService .listen() and setup(); integrate with Settings"

Closes #229 (closed)

Currently the settings are not shown as only one option to send/receive data is shown. You can see them by e.g. importing WebSocketTransmissionModule.forRoot('wss://signal.recoverycat.de') in features.module

Questions I would appreciate help with:

• Do you have a better option to show a select with more information? 🤔
  Currently I have the feeling that information is lacking.
• How to fix these e2e tests…

Proposal: I would like to not put more work into this as it is currently not used anyhow.
It works for now, but doesn't look good. Therefore I would propose merging this for now but handing it over to design so they can incorporate this into the design and then we can create the rest as necessary.