feat: add pr template

Author: helenff

.github/pull_request_template.md

@@ -0,0 +1,35 @@
+## Description
+
+<!-- This section should contain a short summary of the changes. -->
+
+<!-- Please describe the problem you are trying to solve and why those changes are necessary. -->
+
+<!-- If this PR fixes a bug or resolves a feature request, be sure to link to that issue. -->
+
+## Testing considerations
+
+<!-- Describe the tests or steps that you ran to verify your changes. -->
+
+## Checklist
+
+<!-- Please make sure all of the items below are checked before requesting a review: -->
+
+- [ ] Prefixed the PR title with the JIRA ticket code <!-- e.g. `[JIRXXX] Add <XYZ> repository` -->
+- [ ] Performed simple, atomic commits with [good commit messages][commit messages]
+- [ ] Verified that the commit history is linear and commits are squashed as necessary
+- [ ] Thoroughly tested the changes in `development` and/or `staging`
+- [ ] Updated the `README.md` as necessary
+
+<!-- Feel free to open a draft PR to get feedback early. -->
+
+## Related links
+
+<!-- This is a list of links, like the Jira ticket that contains additional context -->
+<!-- and other links to relevant documents, merge requests or discussions. -->
+
+* [#XYZ](https://github.com/scribd/REPO/pull/XYZ)
+* [JIRXXX](https://scribdjira.atlassian.net/browse/JIRXXX)
+* [Design Document](https://scribdjira.atlassian.net/wiki/spaces/SPACEID/pages/PAGEID)
+* [Slack discussion](https://scribd.slack.com/archives/C0DSL144T/p1564610596278400)
+
+[commit messages]: https://chris.beams.io/posts/git-commit/