fix(TU): increase TU coverage

.gitignore

.gitlab-ci.yml

package.json

src/admin/admin.controller.spec.ts

src/admin/admin.controller.ts

src/admin/dto/pending-structure.dto.ts

src/auth/auth.controller.spec.ts

src/auth/auth.service.spec.ts

.../controllers/categories-accompagnement.controller.spec.ts

...ories/controllers/categories-accompagnement.controller.ts

...ries/controllers/categories-formations.controller.spec.ts

...ategories/controllers/categories-formations.controller.ts

...tegories/controllers/categories-others.controller.spec.ts

src/categories/controllers/categories-others.controller.ts

src/categories/schemas/categoriesFormationsModule.schema.ts

...gories/services/categories-accompagnement.service.spec.ts

...categories/services/categories-formations.service.spec.ts

src/categories/services/categories-others.service.spec.ts

src/configuration/configuration.service.spec.ts

src/mailer/mailer.service.spec.ts