Code button - separate CE and EE features
While working on [Prepare common Vue app for Repository and Blob header area](https://gitlab.com/gitlab-org/gitlab/-/issues/497051) I realised that we have a Code button migrated to Vue already. But there's no separation of the EE features. We will need to create a parallel component inside `ee/` directory and separate Kerberos related code there.
Migration MRs:
* [Code dropdown: Migrate to GlDisclosureDropdown](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142554)
* [Code dropdown: Migrate to GlDisclosureDropdown (Part 2)](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143324)
Vue Code button component:
* [code_dropdown.vue](https://gitlab.com/gitlab-org/gitlab/-/blob/9b93205f19eaad321192e68aa6f0172b2e8a363c/app/assets/javascripts/vue_shared/components/code_dropdown/code_dropdown.vue)
issue