Player Name

[FiFolker]

Add the possibility to choose a name idk if he chooses at the first launch and i store it in a file or when he click on multiplayer part he can chooses a name all the time but it means than in singleplayer he won't have name he will be "player" so idk but the possibility to choose a name could be good

[FiFolker]

I let this open but #15 is the same idea more advanced so it can be close at any time