Promote runs in a model's experiments to a model version

.../graphql/mutations/promote_model_version.mutation.graphql

...riment_tracking/routes/candidates/promote/promote_run.vue

...ment_tracking/routes/candidates/show/candidate_header.vue

...javascripts/pages/projects/ml/candidates/promote/index.js

app/controllers/projects/ml/candidates_controller.rb

app/graphql/mutations/ml/model_versions/create.rb

app/models/ml/candidate.rb

app/presenters/ml/candidate_details_presenter.rb

app/services/ml/create_model_version_service.rb

app/views/projects/ml/candidates/promote.html.haml

config/routes/project.rb

doc/api/graphql/reference/index.md

locale/gitlab.pot

...nt_tracking/routes/candidates/promote/promote_run_spec.js

..._tracking/routes/candidates/show/candidate_header_spec.js

spec/frontend/ml/model_registry/mock_data.js

spec/models/ml/candidate_spec.rb

spec/presenters/ml/candidate_details_presenter_spec.rb

...ts/api/graphql/mutations/ml/model_versions/create_spec.rb

spec/requests/projects/ml/candidates_controller_spec.rb