Rename all databased setting classes to be specific to rulesets for now

osu.Game/Configuration/RealmRulesetSetting.cs

@@ -0,0 +1,33 @@
+// 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 System;
+using osu.Game.Database;
+using Realms;
+
+namespace osu.Game.Configuration
+{
+    [MapTo(@"RulesetSetting")]
+    public class RealmRulesetSetting : RealmObject, IHasGuidPrimaryKey
+    {
+        [PrimaryKey]
+        public Guid ID { get; set; } = Guid.NewGuid();
+
+        public int? RulesetID { get; set; }
+
+        public int? Variant { get; set; }
+
+        public string Key { get; set; }
+
+        [MapTo(nameof(Value))]
+        public string ValueString { get; set; }
+
+        public object Value
+        {
+            get => ValueString;
+            set => ValueString = value.ToString();
+        }
+
+        public override string ToString() => $"{Key}=>{Value}";
+    }
+}