Data exports (#2517)

* Import / export UI

* Data exports

* Lint fixes, brakeman update

db/migrate/20250724115507_create_family_exports.rb

@@ -0,0 +1,10 @@
+class CreateFamilyExports < ActiveRecord::Migration[7.2]
+  def change
+    create_table :family_exports, id: :uuid do |t|
+      t.references :family, null: false, foreign_key: true, type: :uuid
+      t.string :status, default: "pending", null: false
+
+      t.timestamps
+    end
+  end
+end