Allow auto pr review config (#602)

Author: rohitvinnakota-codecov

shared/validation/user_schema.py

@@ -612,6 +612,7 @@
     "ai_pr_review": {
         "type": ["dict"],
         "schema": {
+            "auto_review": {"type": "boolean"},
             "enabled": {"type": "boolean"},
             "method": {"type": "string"},
             "label_name": {"type": "string"},