Add option to select the nextflow version for workflow versions

src/client/index.ts

src/client/models/DevWorkflowExecutionIn.ts

src/client/models/NextflowVersion.ts

src/client/models/UserOutExtended.ts

src/client/models/WorkflowIn.ts

src/client/models/WorkflowUpdate.ts

src/client/models/WorkflowVersion.ts

src/components/AppHeader.vue

src/components/workflows/WorkflowWithVersionsCard.vue

src/components/workflows/modals/ArbitraryWorkflowModal.vue

src/components/workflows/modals/CreateWorkflowModal.vue

src/components/workflows/modals/UpdateWorkflowModal.vue

src/views/admin/AdminUsersView.vue

src/views/workflows/ArbitraryWorkflowView.vue

src/views/workflows/MyWorkflowsView.vue