Collection of namespace_id and project_id in Snowplow

Summary

In order to understand usage behavior patterns, we will collect namespace_id and project_id via Snowplow. As noted in #336779 (closed), these fields will not be pseudonymized.

field	need pseudonymization	reasoning	who made decision
namespace_id	No	While the Namespace ID can be used to identify the namespace name via the api, one can only return namespace information for which they are a member of.	@amandarueda
project_id	No	While the Project ID can be used to identify the project name via the api, this is only true for projects set to Public visibility or where you are a member. Given this, anonymization of Project ID is not necessary.	@amandarueda

⚠ Feature Flag - timed release

Please note that this change should be shipped behind a feature flag #338670 (closed) because we need community communication to launched before we start taking this data in production. Target date is Sept. 1, however please confirm with @amandarueda before removing the feature flag.