feat(admin): add delete confirmation dialog for school records

[thakurakanksha288]

Overview

Introduces a JavaScript-based delete confirmation modal to prevent accidental data erasure by administrative users. This provides a clean UX guard layer before final records are deleted from the dashboard.

Changes Made

• Added assets/js/confirm-delete.js: Created modular logic to intercept delete action clicks, launching an interactive confirmation prompt instead of executing immediate destruction.
• Attached listeners to dangerous administrative buttons to standardize safe data handling flows.

How to Test

1. Navigate to the admin dashboard panels.
2. Click any record deletion button (e.g., student, course, or ID card template rows).
3. Verify that the system intercepts the click and cleanly prompts you to confirm your action before completing the request.

closes #79

[github-actions]

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[thakurakanksha288]

hi @harxh-v , kindly merge it under right labels

[thakurakanksha288]

hi @harxh-v , kindly merge this