Check in + Check out

[patela22]

Description

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How Has This Been Tested?

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Checklist

• I have performed a self-review of my code
• I have reached out to another developer to review my code
• I have commented my code, particularly in hard-to-understand areas
• New and existing unit tests pass locally with my changes

[Copilot]

Pull Request Overview

This PR implements check-in and check-out functionality for volunteer registrations, allowing organizations and admins to mark volunteers as clocked in or out for events.

• Adds check-in and check-out methods to the registration model
• Implements API endpoints for checking volunteers in and out of events
• Includes authorization checks to ensure only organizations and admins can perform these operations

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
app/models/registration.py	Adds database methods for checking volunteers in and out
app/api/endpoints/registration.py	Adds API endpoints with authorization and validation

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