Create setup target

Rolling out the component is a pain as it often requires changes to Bazel run commands.

I propose a bazelisk run @ci-component-bazelisk target that writes the following run command files:

These can then be imported in .bazelrc and .bazelrc.ci which can contain any custom flags for the project.

That target should also validate that the .gitlab-ci.yml is using the correct version of the component.

This should be implemented as a //setup target that has a rc and ci sub-command for updating the two parts.

When ran without a sub-command it should update both.