Add email recipient converter to @duck.com email

[HazemSayad]

Summary

Add a convert to duck email address button that takes in an email address then converts it to a valid duck address:
personal Duck Address is jane@duck.com
friend’s email: brian@gmail.com
result: brian_at_gmail.com_jane@duck.com
from: https://duckduckgo.com/duckduckgo-help-pages/email-protection/duck-addresses/how-do-i-compose-a-new-email/

Motivation

What use cases does it support?

Easy generation of duck recipient addresses

What is the expected outcome?

An easy visual Convert to duck address button

Current DuckDuckGo Extention	New Feature Mock

Additional context

Willing to do it, but I don't have the experience with extensions and I don't know the how's. If I am offered guidance, still willing for the fun, the liking of the service, and to contribute to open-source