Add options for import and export of samples

[JonathanTaquet]

Add import options:

• convert to mono (on/off)
  • always / if no korg esli chunk
• loop sample (on/off)
  • always / if no korg esli chunk
• set category (Kick/Snare/.../User)
  • always / if no korg esli chunk
• ...?

Add export options:

• export loop to smpl chunk (on/off)
• export slice points to cue chunk (on/off)
• do not export korg esli chunk (on/off)
• ...?

[JonathanTaquet]

import options added with commit 051882dfec666c3b488ce6c4def7527c58e16241 export options added with commit e0084c83f5ae1e04965a324f124152fddf6907d4