Improve permissions table via separating by category: CI/CD

.../ci/merge_requests/components/pipelines_table_wrapper.vue

...ripts/commit/pipelines/legacy_pipelines_table_wrapper.vue

doc/ci/debugging.md

doc/ci/environments/protected_environments.md

doc/ci/git_submodules.md

doc/ci/jobs/ci_job_token.md

doc/ci/jobs/job_troubleshooting.md

doc/ci/pipelines/merge_request_pipelines.md

doc/ci/pipelines/settings.md

doc/ci/variables/index.md

doc/user/permissions.md

...merge_requests/components/pipelines_table_wrapper_spec.js

...d/commit/pipelines/legacy_pipelines_table_wrapper_spec.js