Sync project run states between scancode.io client and matchcode server

[JonoYang]

When using the match_to_matchcode pipeline on scancode.io, if you were to stop that pipeline when it is in the middle of running, the job on the matchcode server is not stopped while it is on the scancode.io client. We need a way to synchronize states between the two.

[JonoYang]

An approach for this would be to update scancode.io so we are able to perform some cleanup steps when a pipeline run is canceled. This would involve modifying https://github.com/aboutcode-org/scancode.io/blob/main/scanpipe/models.py#L382 to execute user-defined code from a pipeline on the event the pipeline is stopped. We then add a new mixin or step in https://github.com/aboutcode-org/scancode.io/blob/main/scanpipe/pipelines/__init__.py#L160 where the cleanup code for a pipeline can be added.