Design a easy and Beautiful UI for the script

UI makes it easier for people, who are not used to scripts/shell, operate things
- Any suggestions, ideas are welcome
- If one wants to contribute then he/she could directly open a PR
- PR Guidelines are available [here](https://github.com/garganshul108/Code-With-Mosh-Playlist-Downloader/blob/master/CONTRIBUTING.md)

Thanks :heart: :smile: 