Resolve "Ajout des écrans intermédiaires de démarche en ligne"

...form/orientation-form-view/enums/MeetingRDVSSteps.enum.ts

...orientation-form-view/enums/hotlineMediationSteps.enum.ts

...ents/information-screen/information-screen.component.html

...ents/information-screen/information-screen.component.scss

...onents/information-screen/information-screen.component.ts

...orm-view/online-demarch/onlineDemarch-form.component.html

.../orientation-form-view/orientation-form-view.component.ts

src/app/form/orientation-form-view/orientation.module.ts

src/app/utils/orientationUtils.ts

src/assets/img/onlineMediationBeginning.svg

src/assets/img/rdvsBeginning.svg