- 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/Db/Models/GroupName.cs

@@ -0,0 +1,11 @@
+namespace NadekoBot.Core.Services.Database.Models
+{
+    public class GroupName : DbEntity
+    {
+        public int GuildConfigId { get; set; }
+        public GuildConfig GuildConfig { get; set; }
+
+        public int Number { get; set; }
+        public string Name { get; set; }
+    }
+}