create component for sidemenu and add locales for raw text

app/components/dsfr/sidemenu_component.rb

@@ -0,0 +1,15 @@
+class Dsfr::SidemenuComponent < ApplicationComponent
+  renders_many :links, "LinkComponent"
+
+  class LinkComponent < ApplicationComponent
+    attr_reader :name, :url
+    def initialize(name:, url:)
+      @name = name
+      @url = url
+    end
+  end
+
+  def active?(url)
+    current_page?(url)
+  end
+end