Stream log output of terminals to gp rebuild

[loujaybee]

When running gp rebuild I found myself not wanting to have to open up the debug workspace every time to see the log output. I found myself wanting to see the logs inline with the main gp rebuild logs, e.g. with some command like: gp rebuild --logs that would stream them to the main workspace rather than having to open the debug workspace each time.

[akosyakov]

It maybe good to do it by default. My only worry will be that prompt with how to open in another window would be lost.
About --logs not sure, since we have --log=info already. Wonder what could be an alternative option name that it is more specific about tasks?

[stale]

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