feat(api): Mise en place d'une solution mock

angular.json

api/db.json

api/routes.json

package-lock.json

package.json

proxy.conf.json

src/app/structure/components/card/card.component.html

src/app/structure/components/card/card.component.scss

src/app/structure/components/card/card.component.ts

src/app/structure/models/structure.model.ts

src/app/structure/structure.component.html

src/app/structure/structure.module.ts