Added new 'Contribute' section and implemented post feature with auth…

[amit9589]

…or name, localStorage support, and delete option

Contributor Info

Your Name:

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Related Issue

Fixes: #Issue Number

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Description

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Screenshots / Video (Before & After)

Before:

After:

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Checklist

• Mentioned the issue number in this PR.
• Created a separate branch (not main) before committing.
• Changes tested and verified.
• Attached necessary screenshots/videos for clarity.
• Code is clean, readable, and commented where necessary.
• No merge conflicts.
• Follows the design/style guide of the project.
• Added contributor name above.
• Confirmed that the feature fits well with the latest updated version of the website.
• Ensured images and layout are responsive (look good on both desktop and small screens like phones).

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Extra Notes (Optional)

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[github-actions]

Thanks for creating a PR for your Issue! ☺️

We'll review it as soon as possible.
In the meantime, please double-check the file changes and ensure that all commits are accurate.

If there are any unresolved review comments, feel free to resolve them. 🙌🏼

[amit9589]

Implemented Contribute section with post + delete feature