- 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/DiscordUser.cs

@@ -0,0 +1,38 @@
+using System;
+using NadekoBot.Core.Services.Database.Models;
+
+namespace NadekoBot.Db.Models
+{
+    public class DiscordUser : DbEntity
+    {
+        public ulong UserId { get; set; }
+        public string Username { get; set; }
+        public string Discriminator { get; set; }
+        public string AvatarId { get; set; }
+        
+        public ClubInfo Club { get; set; }
+        public bool IsClubAdmin { get; set; }
+
+        public int TotalXp { get; set; }
+        public DateTime LastLevelUp { get; set; } = DateTime.UtcNow;
+        public DateTime LastXpGain { get; set; } = DateTime.MinValue;
+        public XpNotificationLocation NotifyOnLevelUp { get; set; }
+
+        public long CurrencyAmount { get; set; }
+
+        public override bool Equals(object obj)
+        {
+            return obj is DiscordUser du
+                ? du.UserId == UserId
+                : false;
+        }
+
+        public override int GetHashCode()
+        {
+            return UserId.GetHashCode();
+        }
+
+        public override string ToString() => 
+            Username + "#" + Discriminator;
+    }
+}