WIP: added subprojects

src/Coscine.Api/@coscine/api/admin-api.ts

src/Coscine.Api/@coscine/api/application-profile-api.ts

src/Coscine.Api/@coscine/api/blob-api.ts

src/Coscine.Api/@coscine/api/discipline-api.ts

src/Coscine.Api/@coscine/api/handle-api.ts

src/Coscine.Api/@coscine/api/language-api.ts

src/Coscine.Api/@coscine/api/license-api.ts

src/Coscine.Api/@coscine/api/maintenance-api.ts

src/Coscine.Api/@coscine/api/notification-api.ts

src/Coscine.Api/@coscine/api/organization-api.ts

src/Coscine.Api/@coscine/api/pid-api.ts

src/Coscine.Api/@coscine/api/project-api.ts

src/Coscine.Api/@coscine/api/project-invitation-api.ts

src/Coscine.Api/@coscine/api/project-member-api.ts

...scine.Api/@coscine/api/project-publication-request-api.ts

src/Coscine.Api/@coscine/api/project-quota-api.ts

src/Coscine.Api/@coscine/api/project-resource-api.ts

src/Coscine.Api/@coscine/api/project-resource-quota-api.ts

src/Coscine.Api/@coscine/api/project-resource-type-api.ts

src/Coscine.Api/@coscine/api/project-sub-projects-api.ts