feat: round robin handover to specific host

[sean-brydon]

What does this PR do?

• Fixes [CAL-4474] "handover" for round robin #16982
• Fixes CAL-4474

Loom Video: https://www.loom.com/share/43fdf72fef3645f5bc24eae09efb66f4

TODO: Follow up with a PR that shows the users availability status in select with a coloured dot. Green,red etc to ensure that the booking is within their working hours/they're not busy.

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

How should this be tested?

• Are there environment variables that should be set?
• What are the minimal test data to have?
• What is expected (happy path) to have (input and output)?
• Any other important info that could help to test that PR

Checklist

• I haven't read the contributing guide
• My code doesn't follow the style guidelines of this project
• I haven't commented my code, particularly in hard-to-understand areas
• I haven't checked if my changes generate no new warnings

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2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
cal	⬜️ Ignored (Inspect)	Visit Preview		Oct 22, 2024 2:30am
calcom-web-canary	⬜️ Ignored (Inspect)	Visit Preview		Oct 22, 2024 2:30am

[linear]

CAL-4474 "handover" for round robin

[graphite-app]

Graphite Automations

"Add consumer team as reviewer" took an action on this PR • (10/21/24)

1 reviewer was added to this PR based on Keith Williams's automation.