Create PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+<!---
+    Please provide a description of the changes proposed in the pull request.
+    Make sure your commit messages have meaningful information.
+    To help us link commits and PRs to JIRA work items, please include the JIRA ticket ID in the PR title or at least of your commit messages.
+-->
+
+### Issue Number(s)
+<!---
+    Provide a list of fixed issues from Jira (MTT-ticketnumber) or GitHub (#issuenumber).
+    This helps us understand the reasoning behind this change, what it fixes, feature being added, etc.
+-->
+
+### Contribution checklist
+ - [ ] Tests have been added for the project and/or any internal package
+ - [ ] Release notes have been added to the [project changelog](../CHANGELOG.md) file
+ - [ ] Pull request has a meaningful description of its purpose
+ - [ ] All commits are accompanied by meaningful commit messages
+ - [ ] JIRA ticket ID is in the PR title or at least one commit message
+ - [ ] Include the ticket ID number within the body message of the PR to create a hyperlink