[REFACTOR] Convert `CookieConsent.jsx` to TypeScript (`CookieConsent.tsx`)

[Aditya948351]

The CookieConsent component is currently written in JavaScript (.jsx). To maintain type safety across the codebase, rename the file to .tsx and add strict TypeScript interfaces for its props and state.

[nishupr]

Hi @Aditya948351, I'd like to work on this issue. I'll rename CookieConsent.jsx to CookieConsent.tsx and add strict TypeScript interfaces for its props and state. Please assign this to me.

[github-actions]

Hi @nishupr! We have officially assigned this issue to you. Please start working on it, and good luck with your PR!

ETA: 3 days
Issue will be assigned to another contributor if failed to do so!

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