[core] Massive setting system update

- Get rid of attribute crap. Now only interface is required
- Rename canUse to isAdmin in `Bot.IsUserAdminAsync` to match the actual meaning of variable
- Made `AnswerQuery` reusable by moving it from ContentStore to Core's CommonHandler
- Chat Settings edit frontend (inline keyboard)
- Rename NsfwOption to AllowNsfw and move it to ContentStore module
- Remove option backend testing commands
- Add KarmaMode option as an example of Select option type

modules/Reputation/Options/KarmaMode.cs

@@ -0,0 +1,21 @@
+using Kruzya.TelegramBot.Core.Options;
+
+namespace West.TelegramBot.Reputation.Options;
+
+public class KarmaMode : AbstractOption<KarmaMode, string>
+{
+    public override string OptionId => "karmaMode";
+    public override string OptionName => "Karma Mode";
+    public override OptionType OptionType => OptionType.Select;
+    public override string DefaultValue => "geometric";
+
+    public KarmaMode(IOptionProvider optionProvider) : base(optionProvider)
+    {
+        ChoiceList.AddRange(new []
+        {
+            new SelectChoice("geometric", "Geometric", "G"),
+            new SelectChoice("linear", "Linear", "L")
+        });
+    }
+}
+