Add job retry dropdown for manual jobs

app/assets/javascripts/jobs/components/job/empty_state.vue

...aphql/mutations/job_retry_with_variables.mutation.graphql

...jobs/components/job/graphql/queries/get_job.query.graphql

app/assets/javascripts/jobs/components/job/job_app.vue

...ipts/jobs/components/job/legacy_manual_variables_form.vue

...javascripts/jobs/components/job/manual_variables_form.vue

.../jobs/components/job/sidebar/job_sidebar_retry_button.vue

...omponents/job/sidebar/legacy_job_sidebar_retry_button.vue

...pts/jobs/components/job/sidebar/legacy_sidebar_header.vue

...ssets/javascripts/jobs/components/job/sidebar/sidebar.vue

...avascripts/jobs/components/job/sidebar/sidebar_header.vue

app/assets/javascripts/jobs/constants.js

app/assets/javascripts/jobs/index.js

locale/gitlab.pot

spec/features/projects/jobs_spec.rb

spec/frontend/jobs/components/job/empty_state_spec.js

...tend/jobs/components/job/job_sidebar_retry_button_spec.js

...rontend/jobs/components/job/legacy_sidebar_header_spec.js

...rontend/jobs/components/job/manual_variables_form_spec.js

spec/frontend/jobs/components/job/mock_data.js