FE - 1: Left Early Button / Functionality

[Ron-Madan]

On the active view page, where we have the leave queue button, add another button for the user to click "Left Early?" if the queue advanced but the player was not there. Ensure you have a confirmation popup.

• Create a similar method in the utils/api.js file to call the associated endpoint.
• ONLY show this button if the user is in the queue: Rely on the local storage value of "inQueue".
• Add a description in the popup to describe what this means: Ex "Did someone leave early? If so, enter their court #:"

If no one else has done this yet, create a generic version of the confirmation popup we had for user info and put this in the ActiveView directory as it will be needed for the other buttons (End Session, Left Early, No Show, Add Unknowns).