The MGLI is a way to make available all the libraries for Minecraft world generation.
I suggest to consult this website for documentation
The first thing you should do is create a new project in a folder by doing gradle init (if you don't know how, refer to
this guide).
Then you add those lines in your build.gradle:
repositories {
mavenCentral()
maven {
url "https://jitpack.io"
}
}
dependencies {
implementation 'com.github.hube12:SEED:master-SNAPSHOT'
}