added pr template

pull_request_template.md

@@ -0,0 +1,28 @@
+<!--- Provide a general summary of your changes in the Title above -->
+<!--- Please delete options that are not relevant. -->
+
+# Description
+<!--- Describe your changes in detail. Please also include relevant motivation and context. -->
+
+## 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 not work as expected)
+- [ ] Refactor (code change that neither fixes a bug nor adds a feature)
+- [ ] Hot fix (patch that fixes a bug in production)
+
+## How has this been tested? (optional)
+<!--- Please describe the tests that you ran (automated or manual) to verify your changes.-->
+<!--- Provide instructions or any relevant details for your test configuration  -->
+
+## Screenshots (if appropriate):
+
+## Checklist:
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My code follows the code style of this project.
+- [ ] I have performed a self-review of my code
+- [ ] I have added tests to cover my changes.
+- [ ] I ran CI Tests and Unit tests locally prior to submission.
+- [ ] I have updated the documentation accordingly to my changes.