Bug/fix booking limit 12

[devogs]

Description:

This pull request fixes a bug that allowed clubs to book more than 12 places per competition, which violates a key functional requirement of the application. The original purchasePlaces function did not check if the requested number of places exceeded the 12-place limit for a single club. This fix implements the necessary validation to enforce this rule.

Changes Made:

Validation Logic: A conditional check has been added to the purchasePlaces function to verify that the placesRequired variable does not exceed 12.

User Feedback: If a user attempts to book more than 12 places, an error message is displayed to them.

No Deductions: Points and competition places are only deducted if the requested number of places is within the allowed limit.

Verification:

Manual Test: I manually tested the booking process with a request for 13 places. The application now correctly displays an error message and prevents the booking.

Automated Test: An automated test has been created to cover this scenario, ensuring that the bug is fixed and that future changes don't reintroduce it.