Add a new default music for creatures contests

[AerunDev]

As a User
I would like to change the default creature contest background musics
So that I can customize the scene for my game

Note

Default background musics have been already implemented, so this is just an addition to the existing system

Tip

Default BGMs for this system are stored in the ``scripts/6 Contest/04 Logic/0 Contest Info/001 Contest Info.rb` PSDK file. The system has been implemented through the MR #1701 & MR #1771 of PSDK.

References

See the Design on Figma

Acceptance criteria

• The 3 contest related background musics are added to the default background musics list in a contest section :
  • DEFAULT_CONTEST_BGM
  • DEFAULT_CONTEST_RESULTS_BGM
  • DEFAULT_CONTEST_WINNER_BGM
• The user is able to drag & drop a file to update it
• The user is able to change volume & pitch of those musics
• The data is stored in the JSON so that PSDK is able to use it later

[AerunDev]

Description mise à jour pour intégrer le visuel Figma et les 3 BGMs plutôt que seulement celui par défaut. Le fait d'avoir 3 BGMs justifie une section dédiée.