Feature request: jhack etail

Hi,

I am constantly using `jhack tail` to understand the deployment progress and monitor the internal charm activities.

Example:

I have to constantly open several tmux windows to monitor:
1) `jhack tail` # to see juju events
2) `juju status --watch 1s`
3) `juju debug-log --tail ` # overall charm progress / stuck
4) `juju debug-log --tail | grep ERROR ` # errors only to do not miss some in endless flying debug-log

It is a feature request to create high-level `jhack etail` to speed up initial setup.
The `etail` could be an `enhanced tail` which will show the last errors and the last debug-log...

P.S. Is it a time for some nice-aligned default tmux config for juju? `jhack tmux`???