Fake Web Events Versions Save

Fix bug that was causing user_domain_ids to not be unique when picking them from the pool. Add test to validate users are unique.

Remove print that was left unintended in the code

fix bug that was causing event rate to not update over time

• Change marketing events by utm
• Add run simulation as a method of simulation class
• Improve type hinting
• Create unit tests
• Automate test running for new PRs

Fix bug that was causing faker to create every user with the same seed