Feat: Manage conversation for tweets based on the tweet flag (#3353)

Add tweet conversation only if tweets are enabled.

Fixes #1961

app/models/channel/twitter_profile.rb

@@ -3,6 +3,7 @@
 # Table name: channel_twitter_profiles
 #
 #  id                          :bigint           not null, primary key
+#  tweets_enabled              :boolean          default(TRUE)
 #  twitter_access_token        :string           not null
 #  twitter_access_token_secret :string           not null
 #  created_at                  :datetime         not null
@@ -24,6 +25,8 @@ class Channel::TwitterProfile < ApplicationRecord
 
   before_destroy :unsubscribe
 
+  EDITABLE_ATTRS = [:tweets_enabled].freeze
+
   def name
     'Twitter'
   end