Persist Rolemaster fumble range

RpgRoller/Domain/GameModels.cs

@@ -61,6 +61,7 @@ public sealed class SkillGroup
     public required string DiceRollDefinition { get; set; }
     public required int WildDice { get; set; }
     public required bool AllowFumble { get; set; }
+    public int? FumbleRange { get; set; }
 }
 
 public sealed class Skill
@@ -72,6 +73,7 @@ public sealed class Skill
     public required string DiceRollDefinition { get; set; }
     public required int WildDice { get; set; }
     public required bool AllowFumble { get; set; }
+    public int? FumbleRange { get; set; }
 }
 
 public sealed class RollLogEntry