Merge branch 'DEV_infinite_loop'
Version 1.2.2
Support native loop feature for PSF.
  For songs that natively loop, it works well;
  For songs that do not loop, it checks silence for a few seconds, and restart the song if it ends.

Note: PSF2 loop is not supported yet.
Merge branch 'master' into DEV_infinite_loop
Update to v1.2.3, add PSF2's infinite loop support.