Add a pull request template

.github/pull_request_template.md

@@ -0,0 +1,25 @@
+<!--
+Please check the following before you make a pull request:
+
+* The branch you are make the pull request from (in your own fork) must
+  have a unique and descriptive name. Do not make a pull request
+  directly from your copy of `main`, `dev` or `testing`.
+* If you are submitting translation files, only submit the files that
+  you have added translations to, not the other .ts files that may have
+  been updated in the process.
+* Make sure your contributions follow the style guide and other
+  requirements mentioned in the CONTRIBUTING.md file in the repository.
+-->
+
+**Summary**:
+
+**Related issue**:
+
+**Checklist**:
+
+* [ ] The header of all files contain a reference to the repository license
+* [ ] The overall test coverage is increased or remains the same as before
+* [ ] All tests are passing
+* [ ] All flake8 checks are passing and the style guide is followed
+* [ ] Documentation (as docstrings) is complete and understandable
+* [ ] Only files that have been actively changed are committed