add publishing to github packages

build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'java'
     id 'idea'
+    id 'maven-publish'
 }
 
 group 'me.bvn13'
@@ -34,4 +35,22 @@ test {
 
 tasks.withType(Test).configureEach {
     maxParallelForks = 1
+}
+
+publishing {
+    repositories {
+        maven {
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/bvn13/sewy")
+            credentials {
+                username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
+                password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
+            }
+        }
+    }
+    publications {
+        gpr(MavenPublication) {
+            from(components.java)
+        }
+    }
 }