- Database namespace is now NadekoBot.Db

- Db related code is now in src/NadekoBot/Db
- Finished major part of the db refactor, but many optimizations are left to be made

src/NadekoBot/Modules/Utility/Services/RepeaterService.cs

@@ -1,8 +1,7 @@
 #nullable enable
 using Discord.WebSocket;
 using Microsoft.EntityFrameworkCore;
-using NadekoBot.Services;
-using NadekoBot.Services.Database.Models;
+using NadekoBot.Db.Models;
 using NadekoBot.Extensions;
 using System;
 using System.Collections.Generic;