Fixed: improved search functionality and its visibility

[nachiketmahale9]

Summary

This PR improves the search experience in the CardsContainer component.

Changes Made

• Implemented real-time search that filters projects as the user types.
• Fixed broken search logic to properly filter name, description, and tags from listOfProjects.
• Added a user-friendly message when no matching projects are found which fixes Search functionality not displaying error message when no results are found in the landing Page #466 and added a background which @tonkec was wanted in Search functionality not displaying error message when no results are found in the landing Page #466.
• Added subtle box-shadow to the search bar and filter dropdown for better UI clarity.

Why This is Useful

These changes make the UI more intuitive and responsive, especially for users searching through a large list of projects. It also provides immediate feedback when no matches are found, improving overall user experience.

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Let me know if further enhancements or refactoring are required! @singodiyashubham87 , @tonkec & @karthikmc-git

[nachiketmahale9]

Hey @singodiyashubham87, @kartikmc-git, @tonkec can you check this PR. Let me know if further enhancements or refactoring are required!