Merge pull request #16 from LeonLuttenberger/chore/pr-template

chore: Add PR template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+## Describe your changes
+
+## Issue ticket number and link
+
+## Checklist before requesting a review
+
+- [ ] I updated `CHANGELOG.MD` with a description of my changes
+- [ ] If the change was to a module, I ran the code validation script (`scripts/validate.sh`)
+- [ ] If the change was to a module, I have added thorough tests
+- [ ] If the change was to a module, I have added/updated the module's README.md
+- [ ] If a module was added, I added a reference to the module to the repository's README.md
+- [ ] I verified that my code deploys successfully using `seedfarmer apply`
+
+By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.