* feat: add get_media method to retrieve media from provider service
* feat: implement media attachment handling and add media_url method
* feat: add includeMedia option to webhook request in WhatsappBaileysService
* feat: add get_media method to error handling in WhatsappBaileysService
* feat: add includeMedia option to webhook request in WhatsappBaileysService spec
* feat: add media_url method to retrieve media URL in WhatsappBaileysService spec
* refactor: remove get_media method from WhatsappBaileysService and Channel::Whatsapp
* refactor: streamline message handling in IncomingMessageBaileysService spec
* chore: add todo comment about includeMedia
* refactor: simplify media download stubbing in IncomingMessageBaileysService spec
* refactor: simplify media download stubbing in IncomingMessageBaileysService spec
* fix: add missing end statements missed in rebase
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Co-authored-by: gabrieljablonski <contact@gabrieljablonski.com>