Add analytics-eventsdot-prod environment

What

• Add the production analytics environment analytics-eventsdot-prod for installing helm releases on its cluster eventsdot-prod

Why

• Onboarding the production environment for analytical work loads

Related to

• https://gitlab.com/gitlab-org/analytics-section/platform-insights/core/-/issues/89
• https://gitlab.com/groups/gitlab-org/analytics-section/-/epics/14