Fix sprite sorting.

Sprite distance from camera now properly updated when setting their relative distance. Sprites are now sorted by their distance from camera.

Fix curses bug on windows for Python >= 3.12

Fixes a curses bug on windows for Python >= 3.12. See: zephyrproject-rtos/windows-curses#50

Initial release!

Initial release of terminal_dungeon, a raycasting library for your terminal!