Merge pull request #5 from ivanalglave/crud-internship

...ternships/entities/nested-entities/compensation.entity.ts

...nternships/entities/nested-entities/information.entity.ts

src/internships/entities/nested-entities/student.entity.ts

src/internships/entities/nested-entities/tracking.entity.ts

src/internships/internships.controller.ts

src/internships/internships.module.ts

src/internships/internships.service.ts

src/internships/schemas/internship.schema.ts

src/internships/schemas/nested-schemas/address.schema.ts

src/internships/schemas/nested-schemas/affectation.schema.ts

src/internships/schemas/nested-schemas/company.schema.ts

...internships/schemas/nested-schemas/compensation.schema.ts

src/internships/schemas/nested-schemas/information.schema.ts

src/internships/schemas/nested-schemas/student.schema.ts

src/internships/schemas/nested-schemas/tracking.schema.ts

src/main.ts

src/shared/HttpError.ts

src/shared/InternshipState.ts