feat: add improved duo chat context menu category items

mentioned in commit 76c91122

mentioned in merge request gitlab-org/frontend/pajamas-adoption-scanner!342 (merged)

mentioned in merge request status-page!903

mentioned in merge request gitlab-org/editor-extensions/gitlab-jetbrains-plugin!911 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!4039 (merged)

mentioned in merge request gitlab!165456 (closed)

mentioned in merge request gitlab!165458 (merged)

mentioned in commit de596dd0

mentioned in merge request gitlab!165726 (merged)

mentioned in merge request gitlab!166177 (merged)

mentioned in merge request gitlab-org/frontend/playground/accessibility-scanner!50 (merged)

mentioned in merge request gitlab-org/frontend/playground/accessibility-scanner!51 (merged)