Initial split of the modules

NadekoBot.Core/Services/Database/Models/FeedSub.cs

@@ -0,0 +1,23 @@
+namespace NadekoBot.Services.Database.Models
+{
+    public class FeedSub : DbEntity
+    {
+        public int GuildConfigId { get; set; }
+        public GuildConfig GuildConfig { get; set; }
+
+        public ulong ChannelId { get; set; }
+        public string Url { get; set; }
+
+        public override int GetHashCode()
+        {
+            return Url.GetHashCode() ^ GuildConfigId.GetHashCode();
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is FeedSub s
+                ? s.Url == Url && s.GuildConfigId == GuildConfigId
+                : false;
+        }
+    }
+}