Use the new dataset set endpoints in the frontend

src/api/dataset.ts

src/api/process.js

src/api/selection.ts

src/components/Corpus/Datasets/DatasetSets/CreateForm.vue

src/components/Corpus/Datasets/DatasetSets/Row.vue

src/components/Corpus/Datasets/EditModal.vue

src/components/Element/Datasets/ElementDatasets.vue

src/components/Element/Datasets/Row.vue

src/components/Element/DetailsPanel.vue

src/components/Navigation/DatasetFromSelectionModal.vue

src/components/Navigation/ElementList.vue

src/components/Navigation/ElementThumbnail.vue

src/components/Process/Datasets/AddForm.vue

src/components/Process/Datasets/Row.vue

src/store/process.js

src/stores/dataset.ts

src/stores/elements.ts

src/types/dataset.ts

src/views/Dataset/Details.vue

src/views/Process/Configure.vue