chore: one off SMS campaign APIs (#2589)

app/jobs/campaigns/trigger_oneoff_campaign_job.rb

@@ -0,0 +1,7 @@
+class Campaigns::TriggerOneoffCampaignJob < ApplicationJob
+  queue_as :low
+
+  def perform(campaign)
+    campaign.trigger!
+  end
+end

app/jobs/trigger_scheduled_items_job.rb

@@ -0,0 +1,10 @@
+class TriggerScheduledItemsJob < ApplicationJob
+  queue_as :scheduled_jobs
+
+  def perform
+    # trigger the scheduled campaign jobs
+    Campaign.where(campaign_type: :one_off, campaign_status: :active).where(scheduled_at: 3.days.ago..Time.current).all.each do |campaign|
+      Campaigns::TriggerOneoffCampaignJob.perform_later(campaign)
+    end
+  end
+end