Fix(attendance): Implements permission check for manual clock-in/out.…

[ft-mammoo]

This pull request addresses Issue #821 by implementing the necessary logic to restrict the manual attendance (clock-in/clock-out) feature based on user permission.

The goal is to ensure only authorized personnel who possess the specific permission can utilize the feature.

Changes Implemented:

1. Permission Check: The security check (if not request.user.has_perm('attendance.can_manual_login_logout'):) was added to the beginning of both the clock_in and clock_out views.
2. File Modified: All security logic was implemented in the correct file: attendance/views/clock_in_out.py.
3. HTMX Response: The denial response status code was intentionally set to 200 (OK) instead of 403 (Forbidden) to ensure HTMX successfully renders the custom denial message (Manual Attendance Restricted) on the Navbar without the button disappearing.

Verification (Testing):

• Success Case Confirmed: A user with the attendance.can_manual_login_logout permission can successfully use both the Check-In and Check-Out buttons.
• Denial Case Confirmed: A Regular User (non-superuser, without the permission) is correctly blocked by the backend and visually presented with the "Manual Attendance Restricted" message upon clicking the button.

Closes Issue #821.

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[ft-mammoo]

Ready For Review