Reorganize modules

.gitlab-ci.yml

src/app/app-routing.module.ts

src/app/app.routing.spec.ts

src/app/core/components/main/header/header.component.ts

src/app/core/components/main/main.component.ts

...p/core/components/main/side-menu/side-menu.component.html

...app/core/components/main/side-menu/side-menu.component.ts

src/app/core/core-routing.module.ts

src/app/core/core.module.ts

src/app/core/interceptors/http-error-response-interceptor.ts

src/app/core/services/error.service.spec.ts

src/app/core/services/file.service.ts

src/app/core/services/index.ts

src/app/core/services/notification.service.spec.ts

...-properties/dataset-data-detail-properties.component.html

...-properties/dataset-data-detail-properties.component.scss

...il-properties/dataset-data-detail-properties.component.ts

.../dataset-data-details/dataset-data-details.component.html

.../dataset-data-details/dataset-data-details.component.scss

...ts/dataset-data-details/dataset-data-details.component.ts