Add opsu migration, fix font not rendering

osu.Android/OsuGameAndroid.cs

@@ -0,0 +1,44 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Android;
+using osu.Framework.Platform;
+using osu.Game;
+using System;
+using System.IO;
+
+namespace osu.Android
+{
+    internal class OsuGameAndroid : OsuGame
+    {
+        public OsuGameAndroid() : base()
+        {
+
+        }
+        public override Storage GetStorageForStableInstall()
+        {
+            return new OpsuStorage();
+        }
+
+        // For better migration from opsu! to osu!lazer (WIP)
+        private class OpsuStorage : AndroidStorage
+        {
+            bool checkExists(string p) => Directory.Exists(Path.Combine(p, "Songs"));
+
+            protected override string LocateBasePath()
+            {
+                BasePath = base.LocateBasePath();
+                string opsuInstallPath = Path.Combine(BasePath, "opsu");
+                Console.WriteLine(opsuInstallPath);
+                if (checkExists(opsuInstallPath))
+                    return opsuInstallPath;
+                return null;
+            }
+
+            public OpsuStorage() : base(string.Empty, null)
+            {
+                BasePath = LocateBasePath();
+            }
+        }
+    }
+}