Currently, in order to remove old environments, you must either:

• wait for it to expire and run sqlmesh janitor
• Invalidate it with sqlmesh invalidate <environment_name> and then run sqlmesh janitor

However, in the latter step, there is no way to generally list environments (whether they're expired, how much more time till expiration, etc), and the only way to figure this out is manually searching or running the UI.

I am requesting a command, perhaps sqlmesh environments with the capability to list all environments that exist (and bonus points if you could show ttl).