Add analytics instrumentation for allow-listed integrations
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### About
This issue is part of https://gitlab.com/groups/gitlab-org/-/epics/15666+ see that epic for more context.
### Proposal
Add ~"analytics instrumentation" to the feature to provide data of the `allow_all_integrations` application setting.
See https://gitlab.com/gitlab-org/gitlab/-/issues/502500#note_2199694728 for an example of how to do this.
issue