chore: Create PR template (MbinOrg#1059)

Co-authored-by: Melroy van den Berg <[email protected]>

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

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+<!-- This is a comment. You can remove it and other comments while filling out the template -->
+
+# Summary
+
+<!-- 
+Please provide a **short** summary in a few sentences of what the PR does.
+Try to keep it to as few full sentences as possible.
+-->
+
+## Checklist
+
+<!--
+Points that don't don't apply can simply be checked off.
+Feel free to add **N/A** for clarity.
+
+Example:
+
+  - [x] Added tests (for code changes) **N/A**
+-->
+
+ - [ ] Marked as draft PR while still working on PR
+ - [ ] Marked as "ready for review" once not in progress
+ - [ ] Added tests (for code changes)
+ - [ ] Provided screenshots (for visual changes)
+
+
+# Additional information
+
+<!--
+In this section you can describe more in depth:
+
+ - **why** you made it
+ - **how** it achieves its goals
+
+====================Screenshots=====================
+If your PR is visual **provide screenshots**!
+It makes it much easier for reviewers to evaluate your work
+
+Copy this table out of the comment:
+
+|     Before   |    After    |
+| ------------ | ----------- |
+| image_before | image_after |
+-->
+
+# Related issues
+
+<!-- 
+If your PR resolves and existing issue, please link to it in this section.
+
+Example:
+
+  Resolves #1234
+
+Should it not be related to any issue just with "N/A" or "Not applicable"
+-->