add auto-comment

.github/auto-comment.yml

+# Comment to a new issue.
+issueOpened: >
+  Thank your for raising a issue. We will try and get back to you as soon as possible.
+
+  Please make sure you have given us as much context as possible.
+
+pullRequestOpened: >
+  Thank your for raising your pull request.
+
+  Please make sure you have followed our contributing guidelines. We will review it as soon as possible
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