feat: Add language filter for parent analysis

db/migrate/20250408212201_add_housing_to_parent.rb

@@ -0,0 +1,7 @@
+class AddHousingToParent < ActiveRecord::Migration[8.0]
+  def change
+    add_reference :parents, :housing, foreign_key: true
+    Parent.update_all(housing_id: Housing.find_by(designation: 'Unknown').id)
+    change_column_null :parents, :housing_id, false
+  end
+end

db/migrate/20250411213850_create_languages.rb

@@ -0,0 +1,10 @@
+class CreateLanguages < ActiveRecord::Migration[8.0]
+  def change
+    create_table :languages do |t|
+      t.string :designation
+      t.string :slug
+
+      t.timestamps
+    end
+  end
+end