chore: one off SMS campaign APIs (#2589)

db/migrate/20210707142801_add_campaign_type_to_campaigns.rb

@@ -0,0 +1,10 @@
+class AddCampaignTypeToCampaigns < ActiveRecord::Migration[6.0]
+  def change
+    change_table :campaigns, bulk: true do |t|
+      t.integer :campaign_type, default: 0, null: false, index: true
+      t.integer :campaign_status, default: 0, null: false, index: true
+      t.jsonb :audience, default: []
+      t.datetime :scheduled_at, index: true
+    end
+  end
+end

db/schema.rb

@@ -126,8 +126,15 @@ ActiveRecord::Schema.define(version: 2021_07_08_140842) do
     t.jsonb "trigger_rules", default: {}
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
+    t.integer "campaign_type", default: 0, null: false
+    t.integer "campaign_status", default: 0, null: false
+    t.jsonb "audience", default: []
+    t.datetime "scheduled_at"
     t.index ["account_id"], name: "index_campaigns_on_account_id"
+    t.index ["campaign_status"], name: "index_campaigns_on_campaign_status"
+    t.index ["campaign_type"], name: "index_campaigns_on_campaign_type"
     t.index ["inbox_id"], name: "index_campaigns_on_inbox_id"
+    t.index ["scheduled_at"], name: "index_campaigns_on_scheduled_at"
   end
 
   create_table "canned_responses", id: :serial, force: :cascade do |t|