Add resource action. Implement play chart and import resource action.

Assets/Cryville/Crtr/Browsing/Actions/PlayChartAction.cs

@@ -0,0 +1,26 @@
+using Cryville.Crtr.UI;
+using System;
+using System.IO;
+using UnityEngine.SceneManagement;
+
+namespace Cryville.Crtr.Browsing.Actions {
+	internal class PlayChartAction : ResourceAction<ChartDetail> {
+		public override string Name { get { return "Play"; } }
+		public override int Priority { get { return -100; } }
+
+		public override void Invoke(Uri uri, ChartDetail resource) {
+			Settings.Default.LoadRuleset = Path.Combine(resource.Meta.ruleset, ".umgr");
+			Settings.Default.LoadRulesetConfig = resource.Meta.ruleset + ".json";
+			Settings.Default.LoadChart = uri.LocalPath;
+#if UNITY_5_3_OR_NEWER
+			SceneManager.LoadScene("Play", LoadSceneMode.Additive);
+#else
+			Application.LoadLevelAdditive("Play");
+#endif
+			Master.Instance.HideMenu();
+#if UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN
+			DiscordController.Instance.SetPlaying(string.Format("{0} - {1}", resource.Meta.song.name, resource.Meta.name), resource.Meta.length);
+#endif
+		}
+	}
+}