Review and fix generate analytics workflow

[davidgamez]

Description

Generating GTFS analytics is a semi-automated process. This process needs to be updated as it's prone to errors, involves manual execution, and is not well-documented.

Scope

• Implement a fully automated process. Consider reducing the manual intervention to a minimum as an alternative
• Document the process so it can be repeatable.
• Implement a dry-run and generate analytics by batch patterns.