T&A: Implement participant table revision with new UI

[thojou]

Test - Revision of the Participant Tab using New Data Table

This PR implements the feature described in the wiki, and the functionality is now complete and ready for review.

However, there are a few differences compared to the wiki description:

• Status of Attempt: ILIAS does not provide sufficient information to display all the states mentioned. Currently, only Not yet started, Running, and Finished statuses are supported.
• Disinvite User Method: The wiki does not mention a disinviteUser method. A decision is needed on whether to implement this.
• Autocomplete for User Selection: The autocomplete function doesn't work in the legacy UI due to a missing jQuery UI dependency.