Made weather card component and changed styling

[PAOK-2001]

Changes made

• Moved weather card from App.js to dedicated component to clean up code.
• Changed styling of search bar to better fit the design language of the page.

Preview

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Name	Link
🔨 Latest commit	aea7bebc22772860e152cdf079c65abd2a4c43bc

[PAOK-2001]

@suraj-singh127 @yashika51 please review.

[suraj-singh127]

Looks great!