Datasets page components created

...pp/search-multiple/components/dataset-list.component.html

...search-multiple/components/dataset-list.component.spec.ts

src/app/search-multiple/components/dataset-list.component.ts

...rch-multiple/components/datasets-by-projet.component.html

...-multiple/components/datasets-by-projet.component.spec.ts

...earch-multiple/components/datasets-by-projet.component.ts

src/app/search-multiple/components/index.ts

src/app/search-multiple/containers/datasets.component.html

src/app/search-multiple/containers/datasets.component.ts

src/app/search-multiple/containers/position.component.ts

src/app/search-multiple/store/search-multiple.effects.ts

...app/shared/cone-search/conainers/cone-search.component.ts

src/app/shared/cone-search/store/cone-search.action.ts

src/app/shared/cone-search/store/cone-search.effects.ts