app music updates for 4.2.0 release candidate

[cheveron]

• add sfx to Juggler
• add sfx to Boing Ball
• new Run BASIC app framework
• update TC2048 emulator
• add music to Slideshow
• add music to VDP Test
• update music in Skyfall
• add music to 2019
• add music to Kayahara
• new Help app (markdown viewer)
• new Locale app (outputs /system/preferences/system.prf)

[cheveron]

Apps should also be updated to use the new console APIs.