You need to write a wrapper for it with Java.
New video tutorial is available here: http://www.b4x.com/forum/libraries-developers-questions/12431-video-tutorial-creating-simple-library.html Basic4android has a very good support for external libraries. In fact almost all of the internal keywords are loaded from an external library (Core...
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Alternatively you can use JavaObject
The #AdditionalJar module attribute (introduced in B4A v3.80) allows us to reference external jars. With the help of JavaObject it is now possible to integrate third party jars without a wrapper. This solution is good for "simple" libraries. If the API is complicated with many interfaces then...
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Both requires some javaknowledge.
PD: But i don´t think that you can use a GO project in B4X
You may use GO to include this AAR