Feature: Twilio Whatsapp Integration (#779)

Twilio Whatsapp Integration

Co-authored-by: Sojan <sojan@pepalo.com>

app/models/channel/twilio_sms.rb

@@ -5,6 +5,7 @@
 #  id           :bigint           not null, primary key
 #  account_sid  :string           not null
 #  auth_token   :string           not null
+#  medium       :integer          default("sms")
 #  phone_number :string           not null
 #  created_at   :datetime         not null
 #  updated_at   :datetime         not null
@@ -23,6 +24,8 @@ class Channel::TwilioSms < ApplicationRecord
   validates :auth_token, presence: true
   validates :phone_number, uniqueness: { scope: :account_id }, presence: true
 
+  enum medium: { sms: 0, whatsapp: 1 }
+
   belongs_to :account
 
   has_one :inbox, as: :channel, dependent: :destroy