Added Hackathons Page

[Nishitbaria]

Description

This pull request introduces a new Hackathon page to the repository, which showcases hackathon events. It also implements hackathon cards to display relevant information about each event. Furthermore, it enables search functionality, allowing users to search for hackathons based on keywords. Finally, filtering options are added to help users narrow down hackathon results based on specific criteria.

Fixes #(#322)

Replace issue_no with the issue number which is fixed in this PR

Changes made: -Create a new Hackathon page to showcase hackathon events. -Implement hackathon cards to display relevant information about each event. -Enable search functionality to allow users to search for hackathons based on keywords. -Implement filtering options to help users narrow down hackathon results based on specific criteria

Screenshots

Checklist

• [ ] Tests have been added or updated to cover the changes
• [ ] Documentation has been updated to reflect the changes
• [x] Code follows the established coding style guidelines
• [ ] All tests are passing

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[Nishitbaria]

@swapnilsparsh ,please check my pull request