feat: add search bar to Community section for filtering contributors

[SalviVishakha]

Related Issue

Closes: #857

Description of Changes

• Added a search bar in the Community section to allow users to search for contributors by name.
• Implemented real-time filtering functionality using useState and useEffect to filter contributors based on user input.
• Integrated the search bar seamlessly into the existing layout without disrupting the design.
• Ensured that the search is case-insensitive to improve user experience.
• Displayed "No contributors found" when there are no matches for the search term.

Checklist:

• [✅] My code adheres to the established style guidelines of this project.
• [✅ ] I have conducted a self-review of my code.
• [ ✅] I have included comments in areas that may be difficult to understand.
• [✅ ] I have made corresponding updates to the project documentation.
• [ ✅] My changes have not introduced any new warnings.

Screenshots

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