UPDATE save, load & reset

[UPDATE 2019-14-10]

• Adding options-screen (option to reset the game)
• Adding default level data
• Save & Load level data local
• Adding collected stars to the level buttons

Today in my stream I started integrated some default level data and track the collected stars to the save mechanism. After this I tryed to save this data to a local binary file. Therefore I needed to save the gamedata so a json-object, what was not so easy, but at the end I was successful. Saving and loading data  as well as resetting (delete the gamefile).

And I hope, I could fix the bug in level 2 why the car sometimes crashed on normal fields.