Created PR Template (#305)

* Create PULL_REQUEST_TEMPLATE.md

* Fix review comments

.github/PULL_REQUEST_TEMPLATE.md

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+# Title of PR
+
+What is the purpose of this PR?
+
+## Changes
+
+List of changes added as part of this PR. This only needs to include the big changes which reviewers should carefully check.
+
+## Issues
+
+Any issues caused by the PR that will need to be address in another PR. These issues may be caused by another branch which will change how this branch functions.
+
+## Visual Changes
+
+If the PR has any visual changes to the website, post pictures of the new pages and how they look. Label any images if more than one is given.
+
+## Final Checklist
+
+-   [ ] Assign reviewers if you have permission
+-   [ ] Assign labels if you have permission
+-   [ ] Link issues related to PR
+-   [ ] Link any PRs or issues blocking this PR from being merged
+-   [ ] Remove/Reduce warnings from edited files
+-   [ ] Unit tests have been added for changes
+-   [ ] Ensure CI build is passing