Improve random radio

This version improves random radio by ensuring that all radio has been played one before playing again the same given radio.

More radios

Hello there,
This version brings:

• Radios have more relatable names
• Add https://youtu.be/bM0Iw7PPoU4 radio
• Add https://youtu.be/F5v_VqxbQPI
• Fixed dead radio links
• Menu now scrolls to the current radio

Add channels + Volume

Hello there,
I wanted to thanks all of you for the incredible welcome the Lofimusic.app got and all the feedbacks/issues/PR.

This version brings:

• More Lo-Fi radios
• Volume slider
• Mute button

Special thanks to @woutdp for pushing modifications related to the volume.