[FEAT]: ServApp "stacks" cannot be added to or editied

[insanemal]

Feature Description

I can import a docker-compose and end up with a stack. Which is great.

But there doesn't appear to be an easy method to add to said stack after it's created.

Sometimes, during bring up of a new service I've discovered more containers I would like to include in said stack but cannot find a clear way to do that.

This might just be a documentation issue, but it doesn't appear that way.

Thanks in advance.

[bomdia]

you have to add at least 1 label preferred 2:

the first one is referred to the stack name
the second one is referred to the main container of the stack