Tilt daemon?

Describe the Feature You Want

tilt up run as a background process
tilt stop would stop the process. Same as ctrl+c during a tilt up process.

Maybe this already exists?? My apologies for not searching hard enough.

Current Behavior

tilt up takes my console

Why Do You Want This?

As a developer, I might want to tilt up on one microservice. Then as I'm working I realize that I want another microservice tilting. I have to open another console and run the tilt args command and I have to remember the tilt up command so that tilt args doesn't stop tilting things that are already tilting. Then if I wanted to do this again. I'd go to the console where I ran tilt args and up arrow then edit the last command.

I'm working on a little CLI where a developer can interactively choose the microservices they want to tilt. Then it runs the tilt up command with those microservices. If tilt was running in the background then the developer could just be in the same console run a command from this CLI and choose to add more microservices and I'd run the tilt args command for them.

Hope that makes sense.

Additional context
Add any other context or screenshots about the feature request here.

Start by checking the existing Tilt CLI commands and process-lifecycle handling, including whether background operation or a stop command already exists. Compare the requested tilt up and tilt stop behavior with Ctrl+C, and define completion as reliably starting Tilt in the background and stopping that process without interrupting unrelated work.