shortcuts: talk the time and configure the sleep timeout

Use "type: time" and "data: talk" to have the time voiced when the shortcut is run.
use "type: time" and "data: sleep X" where X is the number of minutes to run the sleep timer for (0 means disable)
the name field is required

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31178 a1c6a512-1295-4272-9138-f99709370657
5 files changed