[QTI-224] Add pull_request_template to repository (#37)

Signed-off-by: Ryan Cragun <[email protected]>

Author: ryancragun

.github/pull_request_template.md

@@ -0,0 +1,14 @@
+[Header - Replace this with a short setence describing the changes]
+
+[Message - Replace with an explanation of the changes]
+
+### How to read this pull request
+You may provide an optional explanation of the best way a review might
+approach the changes that are being proposed in this pull request.
+
+### Checklist
+- [ ] Manual validation of the changes have been perfomed (if possible)
+- [ ] New or modified code has requisite test coverage (if possible)
+- [ ] I have performed a self-review of the changes
+- [ ] I have made necessary changes and/or pull requests for documentation
+- [ ] I have written useful comments in the code