Update 1: sound update

I have added beep codes, in the main menu of the game you can adjust the volume.

2 short 1 long: pump 1 off

2 short 1 long 1 short: pump 2 off

2 short 1 long 2 short: pump 3 off

3 long 1 short : high reactor core temp

3 long 3 short: very high reactor core temp