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

src/NadekoBot/Db/Models/currency/BankUser.cs

@@ -0,0 +1,9 @@
+using Nadeko.Bot.Db.Models;
+
+namespace NadekoBot.Db.Models;
+
+public class BankUser : DbEntity
+{
+    public ulong UserId { get; set; }
+    public long Balance { get; set; }
+}