Improve Initial Gem Release Process

[arielvalentin]

We tend to have the same mistakes repeated when releasing new gems. I think we need a linter or guide to help us avoid them in the future.

Our automated release tooling handles versioning. For initial releases this should have been set to 0.0.0

The instrumentation generator seeds the version here:

https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/.instrumentation_generator/templates/lib/instrumentation/instrumentation_name/version.rb.tt#L10

That along with the empty CHANGELOG signals to the release tooling that this specific version will need to be an "initial release" of the gem https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/.instrumentation_generator/templates/CHANGELOG.md.tt

Originally posted by @arielvalentin in #1313 (comment)

[kaylareopelle]

Is there something we could add to the instrumentation generator? Maybe a comment? Or something in the output along with the CI warning?