dev: split warn punishments into a separate table

api: Added warn endpoints
fix: Reminders should now be able to ping everyone if the user who created the reminder has that permission

src/NadekoBot/Db/Models/punish/WarningPunishment.cs

@@ -3,6 +3,7 @@ namespace NadekoBot.Db.Models;
 
 public class WarningPunishment : DbEntity
 {
+    public ulong GuildId { get; set; }
     public int Count { get; set; }
     public PunishmentAction Punishment { get; set; }
     public int Time { get; set; }