added github template for PRs (#172)

Co-authored-by: Jason Miller <developit@users.noreply.github.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,19 @@
+<!--
+    Thank you for contributing!
+-->
+
+#### What is the purpose of this pull request? (put an "X" next to an item)
+
+- [ ] Documentation update
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Code style update (formatting)
+- [ ] Refactoring (no functional changes)
+- [ ] CI related changes
+- [ ] Other, please explain:
+
+#### What changes did you make? (Give an overview)
+
+#### Is there anything you'd like reviewers to focus on?
+
+#### Does this PR introduce a breaking change? (What changes might other developers need to make in their application due to this PR?)