Offline UI

### Is there an existing issue for this?

- [x] I have searched the existing issues and confirmed that this feature is not already requested.
- [x] I read the [FAQ section](https://github.com/gokadzev/Musify/discussions/340) and there's nothing mentioned about this feature.

### Category of the Feature

UI Improvements

### Credits

Me

### Pain

Not really pleasant ui to look at

### Suggested Solution

Make the main Online UI offline when offline. In recommended for you section have the downloaded songs.

In suggested playlist section have the playlist user created or downloaded.

### Useful Resources/References

_No response_