[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/ContentStore/ContentStore.cs

@@ -1,5 +1,7 @@
 using Kruzya.TelegramBot.Core;
+using Kruzya.TelegramBot.Core.Options;
 using Microsoft.Extensions.DependencyInjection;
+using West.TelegramBot.ContentStore.Option;
 using West.TelegramBot.ContentStore.Service;
 
 namespace West.TelegramBot.ContentStore;
@@ -22,6 +24,8 @@ public class ContentStore : Module
 
     public override void ConfigureServices(IServiceCollection services)
     {
+        services.AddScoped<IOption, AllowNsfw>();
+
         foreach (var serviceType in MediaServiceTypes)
         {
             services.AddScoped(typeof(IRandomMediaService), serviceType);