[WIP] Ship 2D environment

Work in progress environment. The ship must avoid obstacles (asteroids in this case), and needs to handle two possible scenarios. One with shooting possible (destroying an asteroid gives a positive reward): https://github.com/user-attachments/assets/50743bbe-0459-43e0-86f3-1c1fdf2826d4 and one where shooting is not possible, the focus being on avoiding the asteroids: https://github.com/user-attachments/assets/cd8d5598-ebc5-4b32-9b04-c2a3a7b49cc7 Asteroids are randomly generated and there is no specific guarantee that the game can be played infinitely (e.g. in some cases it might be impossible to avoid an asteroid).