fix: fix eventModule typing for Discord events

[DuroCodes]

import { eventModule, EventType } from "@sern/handler";
import type { GuildMember } from "discord.js";

export default eventModule({
    type: EventType.Discord,
    name: "guildMemberAdd",
    async execute(member) {
      //          ^ this is now inferred properly 🔥
    },
});