Create script to post reports to Stager

[cklamann]

Depends on #869

The script should take a report csv path and an analysis ID (?) as input and do the following:

• transform report into long format and separate into separate 'reports' for each participant (see Create script to post reports to PhenoTips variant store #869)
• break up each participant-level 'report' into json that corresponds to the appropriate Stager data models (i.e., separate data that belongs in the variant table from data that belongs in the genotype table).
• fetch an API token from Stager using a client key and secret
• post the data to Stager (we might want to write an endpoint like api/analysis/{id}/report that wraps both inserts in a transaction).

This script should go in the same repo as #869.

[delvinso]

Consolidated into #1021