For setup instructions please see the fabric wiki page that relates to the IDE that you are using.
After setting up the IDE, run these commands in the terminal:
./gradlew genSources
./gradlew build
Then find the built JAR in build/libs folder
This mod is available under the CC0 license. Feel free to learn from it and incorporate it in your own projects. This work was originally made by MCrafterZZ on Curseforge who gave me permission to port this mod to 1.16.