feat: add find risk by date

Author: xchopin

src/Model/Risk.php

@@ -40,5 +40,9 @@ public static function latestByClassAndUser(String $classId, String $userId)
         return parent::get("risks/classes/$classId/users/$userId?date=latest");
     }
 
+    public static function findByClassAndUserAndDate(String $classId, String $userId, String $date)
+    {
+        return parent::get("risks/classes/$classId/users/$userId?date=$date");
+    }
 
 }