migrate 392 questions to pattern format

backend/data/questions/best-team-with-no-conflicts.yaml

@@ -8,7 +8,8 @@ categories:
   - dynamic-programming
   - sorting
 patterns:
-  - dynamic-programming
+  - slug: dynamic-programming
+    is_optimal: true
 
 function_signature: "def best_team_score(scores: list[int], ages: list[int]) -> int:"