[Feature Request] Add channels

[iGrog]

It would be cool to add the ability to specify a "channel" where to send trap messages. This means that it would be possible to receive not a single "stream" of all events, but rather separated by channels.

Another cool feature for the UI would be to display messages from different channels side by side in separate columns, but synchronized by time. Something like this:

[butschster]

Hi @iGrog,

We have a similar request regarding Projects, as discussed here: https://github.com/orgs/buggregator/discussions/148. I'm currently working on it. The backend implementation is complete and has been released with a dev tag. Now, the final step is to implement it on the frontend side.

[butschster]

And I like the idea with columns separation!