Add ability to email announcements to all users (#33928)

db/migrate/20250221143646_add_notification_sent_at_to_announcements.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddNotificationSentAtToAnnouncements < ActiveRecord::Migration[8.0]
+  def change
+    add_column :announcements, :notification_sent_at, :datetime
+  end
+end

db/schema.rb

@@ -258,6 +258,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_03_05_074104) do
     t.datetime "updated_at", precision: nil, null: false
     t.datetime "published_at", precision: nil
     t.bigint "status_ids", array: true
+    t.datetime "notification_sent_at"
   end
 
   create_table "annual_report_statuses_per_account_counts", force: :cascade do |t|