Create Geo event when project is created

What does this MR do and why?

Describe in detail what merge request is being backported and why

For Project Repos, #427200 (closed) may be important to large customers, since RegistryConsistencyWorker may not reach new projects quickly. This bug will be fixed by !133239 (merged) in 16.5+.

The current change creates a Geo event when project is created, so that the sync is triggered sooner. We're adding this fix to 16.3 and 16.4 before the actual bug fix lands in 16.5

Changelog: other EE: true

Related issue: #427339 (closed)

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