create tree generation stage addon

common/addons/generation-stage-tree/build.gradle.kts

@@ -0,0 +1,45 @@
+import com.dfsek.terra.configureCompilation
+import com.dfsek.terra.configureDependencies
+
+plugins {
+    `java-library`
+    `maven-publish`
+    idea
+}
+
+configureCompilation()
+configureDependencies()
+
+group = "com.dfsek.terra.common"
+
+dependencies {
+    "shadedApi"(project(":common:api"))
+    "compileOnly"("com.google.guava:guava:30.0-jre")
+
+    "testImplementation"("com.google.guava:guava:30.0-jre")
+}
+
+publishing {
+    publications {
+        create<MavenPublication>("mavenJava") {
+            artifact(tasks["sourcesJar"])
+            artifact(tasks["jar"])
+        }
+    }
+
+    repositories {
+        val mavenUrl = "https://repo.codemc.io/repository/maven-releases/"
+        val mavenSnapshotUrl = "https://repo.codemc.io/repository/maven-snapshots/"
+
+        maven(mavenUrl) {
+            val mavenUsername: String? by project
+            val mavenPassword: String? by project
+            if (mavenUsername != null && mavenPassword != null) {
+                credentials {
+                    username = mavenUsername
+                    password = mavenPassword
+                }
+            }
+        }
+    }
+}