feat: Add GH checks and templates (#222)

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,31 @@
+<!--
+Thank you for helping to improve pre-commit-terraform!
+-->
+
+Put an `x` into the box if that apply:
+
+- [ ] This PR introduces breaking change.
+- [ ] This PR fixes a bug.
+- [ ] This PR adds new functionality.
+- [ ] This PR enhances existing functionality.
+
+### Description of your changes
+
+<!--
+Briefly describe what this pull request does. Be sure to direct your reviewers'
+attention to anything that needs special consideration.
+
+We love pull requests that resolve an open pre-commit-terraform issue. If yours does, you
+can uncomment the below line to indicate which issue your PR fixes, for example
+"Fixes #123":
+-->
+
+<!-- Fixes # -->
+
+### How has this code been tested
+
+<!--
+Before reviewers can be confident in the correctness of this pull request, it
+needs to tested and shown to be correct. Briefly describe the testing that has
+already been done or which is planned for this change.
+-->