Surface room topics to interface

### Your use case

#### What would you like to do?

Surface the current meeting "topic" in the interface.

#### Why would you like to do it?

We often use the same group call to discuss our plans. Sometimes this is having a coffee, sometimes this is discussing some features, sometimes this is taking over the world. It would be nice if this could be visible on screen so that everyone is on the same page.

#### How would you like to achieve it?

Room topics are great, well supported by other clients and "cheap" to use. That would be my preference.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_