now you can select multiple categories for filter

[impruthvi]

Users can conveniently filter content by selecting multiple categories through a dropdown menu or buttons.

https://github.com/code100x/daily-code/assets/61496236/a78b28d4-7efb-40ef-a60b-015d6e5bfab8

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I assure there is no similar/duplicate pull request regarding same issue