feat: Salesforce when create contacts under an account if creating leads is chosen [CAL-4713]

[joeauyeung]

What does this PR do?

This PR enables the option to create contacts under an account if choosing to create events on leads. The PR uses current functionality to search if the attendee or contacts that share the same email domain as the attendee belong to an account. Then create the contact under the account and the event.

• Fixes #XXXX (GitHub issue number)
• Fixes CAL-XXXX (Linear issue number - should be visible at the bottom of the GitHub issue description)

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

[linear]

CAL-4713 Salesforce: Create contact under account if contacts exist with the same email as the attendee - for leads

[graphite-app]

Graphite Automations

"Add consumer team as reviewer" took an action on this PR • (11/14/24)

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

[github-actions]

E2E results are ready!

• Workflow #37824.1 latest results

[Udit-takkar]

LGTM