feat: finish bilingual learning auth cockpit

src/main/java/com/example/demo/security/LearningJwtUtil.java

@@ -48,6 +48,10 @@ public class LearningJwtUtil {
         return parse(token).getSubject();
     }
 
+    public Map<String, Object> claims(String token) {
+        return Map.copyOf(parse(token));
+    }
+
     private Claims parse(String token) {
         return Jwts.parser().verifyWith(key()).build().parseSignedClaims(token).getPayload();
     }