Add pgsql-http extension to our database

[WillNilges]

Will need to CREATE EXTENSION http when this is merged.

Candidate for closing #639

This could also increase our attack surface quite a bit. I wonder if there is a way to restrict what URLs we can query.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.05%. Comparing base (b157bde) to head (7b50f1e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #955   +/-   ##
=======================================
  Coverage   95.05%   95.05%           
=======================================
  Files          98       98           
  Lines        4245     4245           
=======================================
  Hits         4035     4035           
  Misses        210      210           

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[WillNilges]

pramsey/pgsql-http#193