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

Add tweet conversation only if tweets are enabled.

Fixes #1961

db/migrate/20211109143122_add_tweet_enabled_flag_to_twitter_channel.rb

@@ -0,0 +1,5 @@
+class AddTweetEnabledFlagToTwitterChannel < ActiveRecord::Migration[6.1]
+  def change
+    add_column :channel_twitter_profiles, :tweets_enabled, :boolean, default: true
+  end
+end

db/schema.rb

@@ -242,6 +242,7 @@ ActiveRecord::Schema.define(version: 2021_12_08_085931) do
     t.integer "account_id", null: false
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
+    t.boolean "tweets_enabled", default: true
     t.index ["account_id", "profile_id"], name: "index_channel_twitter_profiles_on_account_id_and_profile_id", unique: true
   end