cloudburst server

Note: this applies both Nukkit and Cloudburst. openjdk is deprecated now, I think we should find an alternative. Some of alternatives are listed on there. Please note that, current image contains major vunerabilities through openjdk.

This script compiles Cloudburst server. Remember that you need git and JDK to compile. Also you dont need to place the script in the directory where the repo is. (i had to zip the file because the extention of my script was not allowed.)