Add ValueOrList enum converters

#289

Author: joadan

src/Blazor-ApexCharts/Internal/ChartSerializer.cs

@@ -25,7 +25,10 @@ private static JsonSerializerOptions GenerateOptions<TItem>() where TItem : clas
             serializerOptions.Converters.Add(new CustomJsonStringEnumConverter());
             serializerOptions.Converters.Add(new ValueOrListConverter<string>());
             serializerOptions.Converters.Add(new ValueOrListConverter<double>());
-
+            serializerOptions.Converters.Add(new ValueOrListConverter<Curve>());
+            serializerOptions.Converters.Add(new ValueOrListConverter<FillPatternStyle>());
+            serializerOptions.Converters.Add(new ValueOrListConverter<FillType>());
+            
             return serializerOptions;
         }