Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/Db/Models/anti/AntiSpamIgnore.cs

@@ -0,0 +1,12 @@
+namespace Nadeko.Bot.Db.Models;
+
+public class AntiSpamIgnore : DbEntity
+{
+    public ulong ChannelId { get; set; }
+
+    public override int GetHashCode()
+        => ChannelId.GetHashCode();
+
+    public override bool Equals(object? obj)
+        => obj is AntiSpamIgnore inst && inst.ChannelId == ChannelId;
+}