home: add get `myPlanet` banner (fixes #7476)

[Mutugiii]

Fixes #7476

• Add a check for android devices
• Add a banner for android devices linking to myPlanet

[dogi]

@Mutugiii instead of png here https://upload.wikimedia.org/wikipedia/commons/7/78/Google_Play_Store_badge_EN.svg

[Mutugiii]

Updated the svg

Tested on mobile and tablet -> detection is good Tested on chromebook -> Android detection not working for chromebooks currently