Added auto assign for PR

.github/auto_assign.yml

@@ -0,0 +1,13 @@
+# Set to true to add reviewers to pull requests
+addReviewers: true
+
+# Set to true to add assignees to pull requests
+addAssignees: author
+
+# A list of team reviewers to be added to pull requests (GitHub team slug)
+reviewers:
+  - /sith-3-developers
+
+# Number of reviewers has no impact on Github teams
+# Set 0 to add all the reviewers (default: 0)
+numberOfReviewers: 0