feat: add support for sending sticker packs

[sergiooak]

PR Details

Summary:
Adds support for sending sticker packs, updates typings, and provides usage examples.

Description

• Introduced sendMediaAsStickerPack option to the API and typings.
• Implemented logic for creating and sending sticker packs.
• Updated example.js with new commands for sticker and sticker pack sending.
• Added required dependencies: archiver, sharp.
• Improved type definitions and internal documentation.

Motivation and Context

This change allows users to send multiple stickers as a pack, improving feature parity with WhatsApp’s native functionality and expanding bot/media capabilities.

How Has This Been Tested

• Manual testing using the updated example.js bot commands (!sticker, !pack).
• Verified sticker and sticker pack sending in group and private chats.

Environment

• Machine OS: Windows 11
• Phone OS: Android 14
• Library Version: 2.3000.1024258380
• WhatsApp Web Version: 2.3000.1024258380
• Puppeteer Version: 18.2.1
• Browser Type and Version: Chrome 138
• Node Version: v22.15.0

Types of changes

• Dependency change
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• I have updated the documentation accordingly (index.d.ts).
• I have updated the usage example accordingly (example.js)

[sergiooak]

Sticker Packs in Chat:

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Sticker Pack on Whatsapp Sticker Seach

Including custom Thumbnail

[sergiooak]

Known Bug:

The stickers previews don't load automatically, it just happens after you open the sticker pack for the first time

[sergiooak]

@alechkos About the introduced dependencies, it uses the before optionals archiver and unzipper, and the sharp is used to generate the pack thumbnail.
I guess we can keep the deps as optionals, like the approach on url preview generation, and avoid sharp using another way of generating the png, what do you think:

[alechkos]

Please don't use sharp.

[sergiooak]

Yeah, I figured out why already haha, tomorrow I'll rework to get rid of sharp

[sergiooak]

@alechkos I've removed Sharp from the stack and now use window.WWebJS.cropAndResizeImage to generate the 64x64px PNG for the sticker-pack thumbnail

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Also, to ease my OCD, could you approve the PR: wwebjs/wwebjs.dev#97

[sergiooak]

@alechkos and @tuyuribr I need to do anything to be able to merge this?

[alechkos]

Hi @sergiooak, I tested and it seems that there is no difference between sending a regular pack and one with a custom thumbnail.

[alechkos]

Also, you can't add a sticker pack to your stickers, it responds in Failed to download sticker pack message.

[lindionez]

The idea is great, I hope this functionality will be added one day.