Add Push Notification Feature to WildGuard

[AbhishekChamp879]

This issue aims to implement a push notification feature in the WildGuard project, allowing users to receive notifications about new campaigns, donations, or volunteer opportunities.The code is set up to subscribe users to push notifications, utilizing the Push API and VAPID keys for secure messaging. Users should receive notifications when new campaigns or important updates are available, with the implementation following best practices for service workers and notifications. I would like to request that this feature implementation be considered as part of Hacktoberfest, enabling contributors to engage with the project and enhance its functionality.

[github-actions[bot]]

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