added extraData generic type to manager

[imranbarbhuiya]

Changes

• added extraData generic type to manager so that it can give autocomplete in gw start options, edit and all. x-ref refactor: import timers, event, from node: #412
• also change declare module to top level d.ts with exports
• discord.js is now a dev dependency. Also added v13.0.0 in peer deps.

I did this because every user will be downloading djs, so there is no need to redownload the same.

Status

• These changes have been tested and formatted properly.
• This PR includes only documentation changes (JSDoc, README or typings), no code change.
• This PR introduces some breaking changes.

How to use these generic types?

You can use ExtraData interface in GiveawayManager's generic type. It's optional, if u don't provide the type it'll become any type as before.

  const manager = new GiveawayManager<ExtraData>(client, {
    default: {
      botsCanWin: false,
      embedColor: "#03FEE0",
      embedColorEnd: "#ffffff",
      reaction: "🎉",
    },
  });

Now you'll get autocomplete and validation in giveaway start options also.

If you are extending the manager to change generate embed, then you can add the extraData generic type in Giveaway class

generateMainEmbed(
    giveaway: Giveaway<ExtraData>,
    lastChanceEnabled = false
  ): MessageEmbed {
}

[imranbarbhuiya]

I accidentally edited in my last pr clone. Because of that all my last pr commits are also present here, idk how I can remove them now without recreating. Should I recreate or squash and merge will work?

[imranbarbhuiya]

I'm going to recreate