feat(orientation): Send mail sos tech and clean db

docker-compose.yml

src/configuration/config.ts

src/configuration/configuration.service.ts

src/mailer/mail-templates/sosTechEmail.ejs

src/mailer/mail-templates/sosTechEmail.json

src/online-mediation/onlineMediation.module.ts

src/online-mediation/onlineMediation.service.spec.ts

src/online-mediation/onlineMediation.service.ts

src/structures/dto/structure.dto.ts

src/structures/schemas/structure.schema.ts

template.env