Snowplow development workflow improvements
## Summary
We want to improve developer experience, efficiency and adoption of this service. This epic will track the iteration opportunities available for the Snowplow Micro workflow improvements.
## Iteration Opportunities
1. [x] [Simplify use of Snowplow Micro as ](/gitlab-org/gitlab/-/issues/331979)`snowplow_collector_hostname` in development (what this issue is really targeting)
1. [x] [Include Snowplow Micro as a service in the GDK](/gitlab-org/gitlab-development-kit/-/issues/1235)
1. [ ] Make Snowplow Micro the default `snowplow_collector_hostname` (in development?)
1. [ ] Turn on `snowplow_enabled` by default (in development?)
1. [ ] Investigate frequency & amount of Snowplow events in our production Snowflake collector which come from self-managed instances (likely by mistake)
1. [ ] Consider making Snowplow Micro the default collector for all GitLab self-managed installs (but don’t turn on `snowplow_enabled` by default)
epic