Fixes Currency Converter

[eiva078]

🛠️ Fixes Issue (#1684 )

👨‍💻 Changes proposed and Brief Description

Incorporate images for each currency flags and conversion arrows.
Optimize the layout for various devices, ensuring a seamless experience on desktops, tablets, and smartphones.

✅ Check List (Check all the applicable boxes)

• My code doesn't break any part of the project
• This PR does not contain plagiarized content.
• My Addition/Changes works properly and matches the overall repo pattern.
• The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

@swapnilsparsh please assign the labels and levels

📷 Screenshots

for tablets

for smartphones

with the help of exchange symbol it can be swapped...

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[swapnilsparsh]

@eiva078 Thank you for contributing to this repo. Looking forward for more 🚀

[eiva078]

@eiva078 Thank you for contributing to this repo. Looking forward for more 🚀

@swapnilsparsh sir, please assign this PR also to me...

[eiva078]

@swapnilsparsh sir whatever changes I have made in currency converter it got removed could you please check