feat(Deezer): update metadata.json adding new visuals

[KingKusuo]

Updated so that it contains the updated Deezer logo and website

Description

What it does is basically changing the old logo and background image into the new Deezer format, and also the toggle switch color to the new color scheme

Acknowledgements

• [X] I read the Presence Guidelines
• [X] I linted the code by running yarn format
• [X] The PR title follows the repo's commit conventions

Screenshots

New Background:

New Logo:

New Color: