Encourage to open draft PRs

Author: Kryptos-FR

.github/pull_request_template.md

@@ -28,3 +28,5 @@
 - [ ] I have added tests to cover my changes.
 - [ ] All new and existing tests passed.
 - [ ] **I have built and run the editor to try this change out.**
+
+<!-- Consider opening a draft PR for initial review. -->