Create Postgres DB Before Go Tests, And Drop After Tests

[elraphty]

Context

Currently, .github/prjob_tests.yml runs the Golang test in GitHub Workflow, the tests use a Mock DB so we don't need to spin up any database before the test is run. We want to move the tests from using a Mock DB to a real Postgres DB so we have to have a running DB before the Golang test runs.

Design

So we want to update the Golang test .github/prjob_tests.yml Github workflow to create a database before the test using the test db docker-compose file docker/testdb-docker-compose.yml and drop the database after successfully running the tests.

Acceptance Criteria

• I've tested on Chrome
• I've created a test that...
• I have rebased and tested locally before submitting my PR
• I can submit a PR within 1 day of taking the bounty

Here is an example backend test