Add tags to sound

[restanrm]

• add tags to the sounder interface
• add sound to the http interfaces
• add sound to the bellctl commands
  • list
  • add
  • play
• add tags functionnality to the front
  • filter by tags
  • play sound by tags
  • add sound with tags

play target should allow to specify a tag instead of a sound and a random select on files matching the tag could be done.

filter by tag in the front could be added