On commit or on a daily schedule, create a new project and run pipeline

[pombredanne]

I manage a large codebase and I routinely scans it with the deploy_to_devel pipeline.
Furthermore I want to pre-propulate the purlDB with the packages I may be using ahead of these routine larger scans.

Therefore, I want to have a way to run frequently the pre-populate pipeline (or any other pipeline on some codebase).

This could be one of these:

• GitHub action (on commit or tag or on schedule)
• pre-commit or git hook that would call the SCIO API to create and run a project
• a separate script that could be put in a crontab (possibly used in GH action)

The simplest for a start would be to write a script.

Related: #720 and aboutcode-org/purldb#87 and #815

[tdruez]

@pombredanne New documentation available at https://scancodeio.readthedocs.io/en/latest/automation.html