Have a list of all the threads I've participated in, from the TAC

### Your use case

#### What would you like to do?

Get a quick overview of all the previous threads I've participated to, either because one of my messages was the thread root, or because I answered with a thread response one in a thread.

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

- To get a quick overview of all the answers other people may have sent, since I'm not getting any non-mention thread notification these days.
- To find information back that I've already posted and that is still useful to others
- To have an incentive to use more threads

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

Maybe a detailed screen with all these threads? I know Slack does a side view for this.

(Bonus points if there's a way to unsubscribe from a thread I've previously participated in, but that's a different user story to be fair.)

### Have you considered any alternatives?

_No response_

### Additional context

_No response_