Prepare maven publishing

build.gradle.kts

@@ -3,6 +3,7 @@ plugins {
     kotlin("plugin.serialization") version "1.5.10"
     id("idea")
     id("com.github.jk1.dependency-license-report") version "1.16"
+    id("maven-publish")
 }
 
 group = "ehn.techiop.hcert"
@@ -158,6 +159,21 @@ kotlin {
 }
 
 
+publishing {
+    repositories {
+        mavenLocal()
+        maven {
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/ehn-digital-green-development/hcert-kotlin")
+            credentials {
+                username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
+                password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
+            }
+        }
+    }
+}
+
+
 /*
 * KJS: No way to get test resources in a multiplatform project.
 * https://youtrack.jetbrains.com/issue/KT-36824