Add ruleset config.

Assets/Cryville/Crtr/Config/RulesetConfig.cs

@@ -0,0 +1,12 @@
+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;
+	}
+}