Rated people panel added

WatchIt.Common/WatchIt.Common.Model/Rating/RatingResponseBuilder.cs

@@ -0,0 +1,35 @@
+namespace WatchIt.Common.Model.Rating;
+
+public class RatingResponseBuilder
+{
+    #region FIELDS
+
+    private long _sum;
+    private long _count;
+    
+    #endregion
+
+
+
+    #region CONSTRUCTORS
+
+    private RatingResponseBuilder() { }
+
+    public static RatingResponseBuilder Initialize() => new RatingResponseBuilder();
+
+    #endregion
+
+
+
+    #region PUBLIC METHODS
+
+    public RatingResponseBuilder Add<T>(IEnumerable<T> collection, Func<T, short> selector)
+    {
+        _sum += collection.Sum(x => selector(x));
+        _count += collection.Count();
+        return this;
+    }
+    public RatingResponse Build() => new RatingResponse(_sum, _count);
+
+    #endregion
+}