Add generic ruleset config.

Assets/Cryville/Crtr/Config/RulesetConfig.cs

@@ -1,12 +1,18 @@
-using System.Collections.Generic;
+using Newtonsoft.Json;
+using System.Collections.Generic;
 
 namespace Cryville.Crtr.Config {
 	public class RulesetConfig {
-		public Dictionary<string, InputConfigEntry> inputs
-			= new Dictionary<string, InputConfigEntry>();
-	}
-	public class InputConfigEntry {
-		public string handler;
-		public int type;
+		public Generic generic = new Generic();
+		public class Generic {
+			[JsonProperty("skin")]
+			public string Skin { get; set; }
+		}
+		public Dictionary<string, InputEntry> inputs
+			= new Dictionary<string, InputEntry>();
+		public class InputEntry {
+			public string handler;
+			public int type;
+		}
 	}
 }