Add Linting to Topology Service CI/CD

In the Topology Service https://gitlab.com/gitlab-org/cells/topology-service We are using .proto files to generate the Interface and the GO/Ruby clients.

We should have Linting enabled for the project in the CI/CD file, using protolint.

This might require us to fix some violations (especially Enums), or we can skip them in .protolint.

For reference, see how the Gitaly project is implementing this:

1. See lint-proto job in https://gitlab.com/gitlab-org/gitaly/-/blob/master/.gitlab-ci.yml?ref_type=heads
2. Lint rules in Gitaly project: https://gitlab.com/gitlab-org/gitaly/-/blob/master/proto/.protolint.yaml?ref_type=heads

CC: @ayufan