Implement POST /api/v1/usuarios/senha/trocar

[rgaiacs]

• Write REST API documentation

  https://cric-database.stoplight.io/docs/searchable-image-database-nodejs/reference/cric.yaml/paths/~1usuarios~1senha~1trocar/post

• Write unit tests in src/__tests__/user.js

• Create file src/executores/usuario_executor/ChangePasswordService.js

• Create function in src/controllers/usuario_controller/UsuarioController.js

• Link function to route

[rgaiacs]

@costascaio this is a good issue for you to work to cover different parts of the project.