docs: add a PR template (#24)

Signed-off-by: Ramkumar Chinchani <[email protected]>

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,51 @@
+<!--  Thanks for sending a pull request!  Here are some tips for you:
+1. Ensure you have added the unit tests for your changes.
+2. Ensure you have included output of manual testing done in the Testing section.
+3. Ensure number of lines of code for new or existing methods are within the reasonable limit.
+-->
+**What type of PR is this?**
+
+<!--
+Add one of the following:
+bug
+cleanup
+documentation
+feature
+-->
+
+**Which issue does this PR fix**:
+
+
+**What does this PR do / Why do we need it**:
+
+
+**If an issue # is not available please add repro steps and logs showing the issue**:
+
+
+**Testing done on this change**:
+<!--
+output of manual testing/integration tests results and also attach logs
+showing the fix being resolved
+-->
+
+**Automation added to e2e**:
+<!-- 
+Test case added to lib/integration.sh 
+If no, create an issue with enhancement/testing label
+-->
+
+**Will this break upgrades or downgrades?**
+
+
+**Does this PR introduce any user-facing change?**:
+<!--
+If yes, a release note update is required:
+Enter your extended release note in the block below. If the PR requires additional actions
+from users switching to the new release, include the string "action required".
+-->
+
+```release-note
+
+```
+
+By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.