[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

Core/Options/DbOptionProvider.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Reflection;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Kruzya.TelegramBot.Core.Data;
 using Kruzya.TelegramBot.Core.Extensions;
 
@@ -14,46 +12,16 @@ public class DbOptionProvider : IOptionProvider
     {
         _db = db;
     }
-
-    public async Task<TValue> GetValueAsync<TOption, TValue>(long chatId)
-    {
-        return await GetValueAsync(
-            chatId, 
-            GetOptionId<TOption>(), 
-            GetDefaultValue<TOption, TValue>()
-        );
-    }
-
+    
     public async Task<TValue> GetValueAsync<TValue>(long chatId, string optionId, TValue defVal)
     {
         return (await _db.ChatOptionValues.FindOrCreateOption(chatId, optionId)).GetValue(defVal);
     }
 
-    public async Task SetValueAsync<TOption, TValue>(long chatId, TValue value)
+    public async Task SetValueAsync<TValue>(long chatId, string optionId, TValue value)
     {
-        var chatOption = await _db.ChatOptionValues.FindOrCreateOption(chatId, GetOptionId<TOption>());
+        var chatOption = await _db.ChatOptionValues.FindOrCreateOption(chatId, optionId);
         chatOption.SetValue(value);
         _db.AddOrUpdate(chatOption);
     }
-
-    protected OptionAttribute GetOptionAttribute<TOption>()
-    {
-        return typeof(TOption).GetCustomAttribute<OptionAttribute>();
-    }
-
-    protected string GetOptionId<TOption>()
-    {
-        var optionId = GetOptionAttribute<TOption>()?.OptionId;
-        if (optionId == null)
-        {
-            throw new ArgumentException("Option must implement OptionAttribute");
-        }
-        
-        return optionId;
-    }
-
-    protected TValue GetDefaultValue<TOption, TValue>()
-    {
-        return (TValue) GetOptionAttribute<TOption>().DefaultValue;
-    }
 }