fix: added usings, simplified imports, using JsonElement.Deserialize directly instead of JsonSerializer.Deserialize(JsonElement), removed some unused attributes

src/ElectronNET.API/API/Entities/ProgressBarOptions.cs

@@ -11,7 +11,6 @@ namespace ElectronNET.API.Entities
         /// <summary>
         /// Mode for the progress bar. Can be 'none' | 'normal' | 'indeterminate' | 'error' | 'paused'.
         /// </summary>
-        [JsonConverter(typeof(JsonStringEnumConverter))]
         public ProgressBarMode Mode { get; set; }
     }
 }