Enhance Currency Feature: Add Dropdowns and Scrollable Full Currency List

[Riya-Jain-here]

Description:
Currently, the currency converter buttons and the listed currency section have the following limitations:

Current Limitations:

1. The currency converter uses buttons to switch currencies, which limits usability.
2. The currency list section displays only a limited number of currencies and is not scrollable.

Proposed Enhancements:

1. Replace the converter buttons with dropdowns to allow selecting from most world currencies.
2. Expand the currency list section to include all currencies.
3. Make the currency list section scrollable independently.

Expected Benefits:

• Users can select any currency easily in the converter.
• Users can view the complete list of currencies without affecting the page scroll.

[Riya-Jain-here]

Hello, I would like to contribute to this issue. Please review it, and I’ll start working once it’s approved.

[SHAKSHIY]

Hey, I’d like to work on this issue under GSSoC’25. Please assign it to me.