Demo build small update

- Adjusted the wrong sized background NPC.
- Added some SFX to mini-games.
- Updated one of the kick attack's SFX.
- Changed the text colour when not enough money to purchase an item.
- Fixed pedestrian NPC image tearing issue.
- Playtime can now be recorded and displayed normaly.
- Added a SFX when player move close to savepoint (flower pot).
- Added some temporary NPC(still image) and finished NPC (in front of school gate.)
- Fixed the issue of button misfunction when confirming in loading save data.