Chrome Extension: Whatsapp Blaster

Hi, I’m looking for developer who can develop chrome extension similar to this https://chrome.google.com/webstore/detail/wamessages-wamessages-sen/fbkejdngkadphfgbmmhdcjcdemkjcnco

I need features:
– Whatsapp personal blasting
– Group Blasting (message, img, video etc)
– Extract contact from group
– Extract contact from Whatsapp
– Extract contact from chat
– whatsapp group link scrapper (from google)
– Whatsapp group auto join group from link scrapper
– licenses module for use this apps.

bid your real best price.