[FEAT] - Moving background toggle from Hamburger menu to main page for Mobile devices

## Is your feature request related to a problem? Please describe.
Usage of background toggle would look great in main page for mobile users instead of going to hamburger menu
and switching it from there.

### Snap of mobile view

## Describe the solution you'd like
Moving toggle to main index page, maybe in smaller icon (if design is compromised), this could help user to switch easy from
both modes

## Describe alternatives you've considered
Apart from moving the toggle icon, everything is perfect, and you can drop this feature, if it feels it is designed in
the same way.

## Additional context