chore: add pull request template for contributions

Author: ArthurKun21

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,28 @@
+<!-- Thanks for sending a pull request! Make sure to follow the contributing guidelines. -->
+<!-- Important note, we may remove your pull request if you do not use this provided PR template correctly. -->
+
+## Pull Request Type
+<!-- Please select what type of pull request this is: [x] -->
+- [ ] Bugfix
+- [ ] Feature Implementation
+- [ ] Documentation
+- [ ] Other
+
+## Related issue
+<!-- Please link the issue your pull request is referring to. -->
+<!-- If this pull request fully resolves the relevant issue, put "closes" before the issue number. -->
+<!-- Example: "closes #123456". -->
+
+## Description
+<!-- Please write a clear and concise description of what the pull request does. -->
+
+## Screenshots <!-- If appropriate -->
+<!-- Please add before and after screenshots if there is a visible change. -->
+
+## Testing <!-- for code that is not small enough to be easily understandable -->
+<!-- Has this pull request been tested? -->
+<!-- Please describe shortly how you tested it. -->
+<!-- Are there any ramifications remaining? -->
+
+## Additional context
+<!-- Add any other context about the pull request here. -->