Fix 59 Ajout d'icône dans le side menu

.storybook/preview.js

AVOIR.md

AVOIR.png

CHANGELOG.md

...onents/src/lib/dsfr-sidemenu/dsfr-sidemenu.component.html

...onents/src/lib/dsfr-sidemenu/dsfr-sidemenu.component.scss

...mponents/src/lib/dsfr-sidemenu/dsfr-sidemenu.component.ts

...-components/src/lib/dsfr-sidemenu/dsfr-sidemenu.module.ts

.../src/lib/dsfr-sidemenu/menu-link/menu-link.component.html

.../src/lib/dsfr-sidemenu/menu-link/menu-link.component.scss

...ts/src/lib/dsfr-sidemenu/menu-link/menu-link.component.ts

...ponents/src/lib/dsfr-sidemenu/stories/sidemenu.stories.ts