Add nav entries for GLQL merge request and AI usage event analytics

Robert Huntrequested to merge
rhunt/glql-analytics-nav-entries into main

Adds navigation entries for two new GLQL data source pages coming in GitLab 19.3 via gitlab-org/gitlab!249118 (merged):

  • user/glql/data_sources/merge_request_analytics/
  • user/glql/data_sources/ai_usage_events/

This should merge after gitlab-org/gitlab!249118 (merged) does, so the nav doesn't point at pages that don't exist yet.

Related to gitlab-org/gitlab#592272 (closed) and gitlab-org/gitlab#592280 (closed)

Merge request reports