"Airhorn" library should replace current twilio notification system

[jasonbaik]

https://github.com/jaredwray/airhorn

Messages to replace

You have been outbid for {{auctionTitle}}. Click here to bid again: {{auctionLink}}
You have bought the auction {{auctionTitle}}! {{auctionLink}}
You have bought the auction {{auctionTitle}}! {{auctionLink}} To arrange delivery follow the link: {{auctionDeliveryLink}}
It’s time to ship {{auctionTitle}}. Click here for the details {{link}}
Package from auction {{auctionTitle}} sent. Follow this {{trackingLink}} or use this {{identificationNumber}} to track it.
Your auction {{auctionTitle}} is already at {{auctionPrice}} with 24 hours left. Use this link {{shortUrl}} on your social networks to have people bid more!
{{influencerName}} - {{auctionName}} auction ends in {{timeLeftText}}. Click {{auctionLink}} to bid!
A new auction benefiting your charity has launched. Check it out here: {{auctionLink}}
A new auction benefiting {{charityName}} charity has launched. Check it out here: {{auctionLink}}
A new auction by {{influencerName}} has launched. Check it out here: {{auctionLink}}
You have won the auction {{auctionTitle}}! {{auctionLink}}
You have won the auction {{auctionTitle}}! {{auctionLink}} To arrange delivery follow the link: {{auctionDeliveryLink}}
You have replaced your phone number {{oldPhoneNumber}} with a new one {{newPhoneNumber}}. If it wasn’t you, please let us know {{contactEmail}}.
Hello, ${name}! You have been invited to join Contrib at ${link} Sign in with your phone number to begin.

[madysh]

@jasonbaik integrated: https://github.com/contriborg/contrib-app/pull/1007

[jasonbaik]

note: #1007 will integrate airhorn, but we decided not to proceed due to undesirable workaround in code.