Create Pull Request Template

Author: narangmayank

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+Thank you for contributing to this project! You must fill out the information below before we can review this pull request. By explaining why you're making a change (or linking to an issue) and what changes you've made, we can triage your pull request to the best possible team for review.
+-->
+
+Closes #<!--Issue Number-->
+
+<!-- If there's an existing issue for your change, please link to it above. If there's not an existing issue, please open one first to make it more likely that this update will be accepted :) 
+--->
+
+### Why:
+Please describe why the changes had to be made.
+
+## Changes Description
+Please describe your proposed Pull Request and it's impact.
+
+## Tests Scenarios
+Please describe on what Hardware and Software combinations you have tested this Pull Request and how.
+
+(for eg. I have tested my Pull Request on Arduino-ESP32 Core SDK v2.0.7 and Bytebeam Arduino SDK Version 1.0.1 with ESP32 and ESP32-S2 Board with this scenario)