docs: pull request template added to .github

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+<!--
+- Fill in the form below correctly. This will help the Peck team to understand the PR and also work on it.
+-->
+
+### What:
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Update the README.md
+- [ ] Misc. change (internal, infrastructure, maintenance, etc.)
+
+### Description:
+
+<!-- describe what your PR is solving -->