Add step with publishing packages to GitHub into build script. Fix #8

build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'java'
     id 'jacoco'
+    id("maven-publish")
 }
 
 group = 'by.andd3dfx'
@@ -58,3 +59,21 @@ jacocoTestReport {
         }))
     }
 }
+
+publishing {
+    repositories {
+        maven {
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/andrei-punko/pde-solvers")
+            credentials {
+                username = project.findProperty("gpr.user") ?: System.getenv("USERNAME")
+                password = project.findProperty("gpr.key") ?: System.getenv("TOKEN")
+            }
+        }
+    }
+    publications {
+        gpr(MavenPublication) {
+            from(components.java)
+        }
+    }
+}

gradle.properties

@@ -1 +1,3 @@
 lombokVersion = 1.18.34
+gpr.user = GITHUB_USERNAME
+gpr.key = GITHUB_TOKEN