Added publishing configuration

Author: Menecats

build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'java'
+    id 'publishing'
 }
 
 group 'org.example'
@@ -11,3 +12,16 @@ repositories {
 
 dependencies {
 }
+
+publishing {
+    repositories {
+        maven {
+            name = "GitHubPackages"
+            url = "https://maven.pkg.github.com/octocat/hello-world"
+            credentials {
+                username = System.getenv("GITHUB_ACTOR")
+                password = System.getenv("GITHUB_TOKEN")
+            }
+        }
+    }
+}