Pure black and white filter (#245)

* Spaceball cleanup and small bug fix

* Replace old hit sound in spaceball

* Camera filters

* added 9 new filters, including 3 types of sepia

* oops

* remark

* normalization of fade out and fade in on filters are by 100

* GenerateFilterTypeEnum comments

* Pure black and white filter

Assets/Scripts/Games/Global/Filter.cs

@@ -71,6 +71,8 @@ namespace HeavenStudio.Games.Global
             tritanopia = 50,
             vibrance = 51,
             winter = 52,
+            blackwhite = 53,
+            blackwhite_2 = 54,
         }
 
         #region MonoBehaviour