add flag to `flowpipe pipeline list` to restrict the view to just local pipelines

[judell]

When I have a couple of local pipelines and dozens of imported ones, I'd like an easy way to review the local ones.

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This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 30 days.

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This issue was closed because it has been stalled for 90 days with no activity.