refacto: change time format

src/app/carto/carto.component.ts

src/app/form/form.component.ts

src/app/models/time.model.ts

src/app/services/structure.service.ts

...pp/shared/components/hour-picker/hour-picker.component.ts

src/app/shared/validator/form.ts

...mponents/structure-details/structure-details.component.ts