Add summary publication on GitHub Packages (#275)

Author: viktoriia-fomina

utbot-summary/build.gradle

@@ -13,4 +13,17 @@ dependencies {
     implementation group: 'io.github.microutils', name: 'kotlin-logging', version: kotlin_logging_version
 
     implementation group: 'com.github.javaparser', name: 'javaparser-core', version: '3.22.1'
-}
+}
+
+publishing {
+  repositories {
+    maven {
+      name = "GitHubPackages"
+      url = "https://maven.pkg.github.com/UnitTestBot/UTBotJava"
+      credentials {
+        username = System.getenv("GITHUB_ACTOR")
+        password = System.getenv("GITHUB_TOKEN")
+      }
+    }
+  }
+}