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.