Add basic localisation strings for new mod select

osu.Game/Localisation/ModSelectScreenStrings.cs

@@ -0,0 +1,29 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Localisation;
+
+namespace osu.Game.Localisation
+{
+    public static class ModSelectScreenStrings
+    {
+        private const string prefix = @"osu.Game.Resources.Localisation.ModSelectScreen";
+
+        /// <summary>
+        /// "Mod Select"
+        /// </summary>
+        public static LocalisableString ModSelectTitle => new TranslatableString(getKey(@"mod_select_title"), @"Mod Select");
+
+        /// <summary>
+        /// "Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play. Others are just for fun."
+        /// </summary>
+        public static LocalisableString ModSelectDescription => new TranslatableString(getKey(@"mod_select_description"), @"Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play. Others are just for fun.");
+
+        /// <summary>
+        /// "Mod Customisation"
+        /// </summary>
+        public static LocalisableString ModCustomisation => new TranslatableString(getKey(@"mod_customisation"), @"Mod Customisation");
+
+        private static string getKey(string key) => $@"{prefix}:{key}";
+    }
+}