docs: add pull request template

Author: vgbr-dev

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,41 @@
+---
+name: Pull Request
+about: Submit a code change for review
+
+---
+# Pull Request
+
+## Description
+
+A clear and concise description of what this pull request changes.
+
+## Motivation and Context
+
+Why is this change required? What problem does it solve?
+
+## How Has This Been Tested?
+
+Please describe in detail how you tested your changes.
+
+## Screenshots
+
+If applicable, add screenshots to help explain your changes.
+
+## Types of changes
+
+What types of changes does your code introduce? Put an `x` in all the boxes that apply:
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+- [ ] Documentation update
+- [ ] Other (please describe):
+
+## Checklist
+
+Put an `x` in all the boxes that apply:
+
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] I have added necessary documentation
+- [ ] My changes generate no new warnings
+- [ ] I have updated the README.md file if necessary