feat: org-wide workflows

[CarinaWolli]

What does this PR do?

Org-workflow can be set active on teams and will trigger for all the team's event type + all the user event types of the team members.

workflows/update.handler is refactored into smaller functions that can be reused and tested.

• Fixes [CAL-3489] org-wide workflows #14638
• Fixes CAL-3489

Loom Video: https://www.loom.com/

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected)
• I have added a Docs issue here if this PR makes changes that would require a documentation change
• I have added or modified automated tests that prove my fix is effective or that my feature works (PRs might be rejected if logical changes are not properly tested)

How should this be tested?

Basic test:

• Create and org workflow
• Set active on a team (or all teams)
• Book a team event type --> see if workflow triggers
• Book a user event type of a team member --> see if workflow triggers

Test other cases, for example:

• test with several teams when some team members are part of several teams --> a workflow should always just trigger once
• Test updating a 'before event' workflow and see if WorkflowReminders are correctly adjusted
  • delete reminders if team is removed from workflow (but if user is still part of another team that is active, the reminder should stay)
• delete/add reminders for deleted/added steps
• Add reminders for new active teams
• Test if 'active on all teams/even-types, including future ones' works with new event types/teams