feat(card): ajout template + logique structures

.gitignore

package-lock.json

package.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/services/structure.service.ts

src/app/structure/structure.module.ts

src/assets/scss/_icons.scss