Add gradle publish

build.gradle

@@ -29,6 +29,22 @@ allprojects {
         google()
     }
 	
+    apply plugin: "maven-publish"
+    publishing {
+        repositories {
+            maven {
+                name = "GitHubPackages"
+                url = uri("https://maven.pkg.github.com/$System.env.REPO")
+                credentials {
+                    username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
+                    password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
+                }
+            }
+        }
+        publications {
+            gpr(MavenPublication)
+        }
+    }
 }
 
 task clean(type: Delete) {