Proposal update PR template to add a section on testing
I think in addition to our current sections on the PR template we should add a section something like
"Explain how this PR adds relevant test cover. If test cover has not been added please explain why not, or which existing tests cover the relevant code, with reference to discussion at https://github.com/civicrm/civicrm-dev-docs/issues/832"
@MikeyMJCO @totten @seamuslee @colemanw