Enable search and filter on the country list

[MaymoonaAlBoloshi]

Background

This feature aims to allow the user to filter countries by continents, and allow the user to search by country name

UAT

• [ ] Search input UI,. with the search icon inside of it
• [ ] filter drop-down ui
• [ ] Filter should have the list of continents
• [ ] Search should work on user change with a slight delay (debounce)
• [ ] Filter should work on change

[ireemalqarni]

Closes #7

Description

-Adjusting app filter and search features, make color changes to the dark mode

Change log

• dark mode color
• fixed country-card sizes

-Proof of success https://github.com/user-attachments/assets/262de7ab-ec90-41a8-8355-704feb2c5c32

How to test -npm run dev

[MaymoonaAlBoloshi]

changes included in this pr

[ireemalqarni]

close #10

• fix and modify CSS to :
  1. fit all media display
  2. re align text cards to left
  3. adjust the colors on dark mode
  4. adjust card sizes in search and filter