Implement User Search Feature

[Illuminati9]

Issue Title:

Implement User Search Feature

Description:

Enhance the user experience by implementing a user search feature in the home page of the chat app. This feature will allow users to search for other users by their email addresses, making it easier to find and initiate conversations with specific individuals.

Tasks:

• Design a search bar UI element to allow users to input search queries.
• Implement search functionality to filter the list of users based on the entered query, dynamically updating the displayed user list.
• Ensure that the search feature handles edge cases gracefully, such as empty query strings or invalid user input.
• Integrate Firebase Firestore query operations to efficiently retrieve user data and perform real-time filtering of search results.
• Test the user search feature across different scenarios, including various search queries and user interaction patterns, to verify its reliability and responsiveness.
• Provide visual feedback to users during the search process, such as loading indicators or search result summaries, to improve the overall search experience.
• Document the search feature implementation details, including search algorithm and UI components, for future reference and maintenance.