Experiment with differential privacy

[hopsoft]

Experiments with differential privacy to start the conversation around this.

Type of PR

• feature
• enhancement
• bug fix
• other

Checklist

• My code follows the style guidelines of this project & the tests are passing
• I have performed a self-review of my own code
• I have requested a review from another developer(s)

Diagram

[codecov]

Codecov Report

Merging #1290 into master will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1290      +/-   ##
==========================================
+ Coverage   34.78%   34.82%   +0.03%     
==========================================
  Files         335      336       +1     
  Lines        7810     7814       +4     
==========================================
+ Hits         2717     2721       +4     
  Misses       5093     5093              

Impacted Files	Coverage Δ
app/lib/differential_privacy.rb	100.00% <100.00%> (ø)
app/jobs/schedule_organization_report_job.rb	86.20% <0.00%> (ø)