Release 3d08b10

Refactor time synchronization and navigation logic

- Updated Multihelper.gd to include checks for current_hour and current_minute before syncing time, enhancing robustness in game data handling.
- Refactored dayNightCycle.gd to improve time management, including a new sync_time RPC function and adjustments to time calculations.
- Enhanced NavHelper.gd to ensure tilemap retrieval is more reliable, with added checks to prevent errors when accessing navigable tiles.
- Improved PointsDraw.gd to ensure proper handling of tile_map before drawing, preventing potential runtime errors.

These changes collectively enhance the game's time synchronization, navigation logic, and overall code reliability.