396: Add image to launch screen

Task: #396 (closed)

Most of the time, you need to restart your device after changing an image, so for testing purposes, it's better to use the simulator. Not all images are accepted; it's better to use PNG or SVG formats.

I experimented a bit to get the background image and also wasn't able to get the white circle logo because it wasn't grouped, which is why I picked purple. If you like the result, I can try grouping the white circle logo and update this PR.

Also I need to know where Sanjin took Outfit font.

iPad and iPhone result