Add shiko_notifications — multi-channel notification SDK

Author: donleandro

README.md

@@ -620,6 +620,7 @@ There are [other sites with curated lists of elixir packages](#other-awesome-lis
 * [mailman](https://github.com/kamilc/mailman) - Mailman provides a clean way of defining mailers in your Elixir applications.
 * [pop3mail](https://hex.pm/packages/pop3mail) - Pop3 client to download email (including attachments) from the inbox via the commandline or Elixir API.
 * [ravenx](https://github.com/acutario/ravenx) - Notification dispatch library for Elixir applications.
+* [shiko_notifications](https://github.com/Leandro-Moreno/shiko_notifications) - Multi-channel notification SDK for email, SMS, WhatsApp, push, and Telegram with 23 provider adapters, bulk sending, A/B testing, and analytics.
 * [smoothie](https://github.com/jfrolich/smoothie) - Smoothie inline styles of your email templates, and generates a plain text version from the HTML.
 * [swoosh](https://github.com/swoosh/swoosh) - Compose, deliver and test your Emails (with attachments!) easily in Elixir with adapters for SMTP, Sendgrid, Mandrill, Mailgun, Postmark and lots others, plus Phoenix integration with mailbox preview.