queue sequence control

[blueraincoatli]

It would be great to have a node that controls the queue sequnce, running the queues sequentially, separating each queue with a group, and running one queue per group, so that we can produce some parameters in the previous queue to pass to the next queue.
idea from a reddit post:
https://www.reddit.com/r/comfyui/comments/166uheo/comment/jym4ye2/?utm_source=share&utm_medium=web2x&context=3