Write documentation for accessing the data pipeline

Prepare documentation for the OONI Open Data Hackfest explaining how to access the data pipeline.

added component::archived/ooni ooni-odhf owner::aagbsn priority::medium resolution::invalid severity::normal status::closed type::task labels

Trac:
Owner: hellais to aagbsn
Status: new to assigned

This is not relevant any more.

Trac:
Reviewer: N/A to N/A
Severity: N/A to Normal
Resolution: N/A to invalid
Sponsor: N/A to N/A
Status: assigned to closed

closed