Add ability to filter followed accounts' posts by language (#19095)

db/migrate/20220829192658_add_languages_to_follow_requests.rb

@@ -0,0 +1,5 @@
+class AddLanguagesToFollowRequests < ActiveRecord::Migration[6.1]
+  def change
+    add_column :follow_requests, :languages, :string, array: true
+  end
+end