add gradle stuff to automatically build addons

buildSrc/src/main/kotlin/com/dfsek/terra/AddonConfig.kt

@@ -0,0 +1,25 @@
+package com.dfsek.terra
+
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.withType
+import org.gradle.language.jvm.tasks.ProcessResources
+import java.io.File
+
+
+fun Project.runDir(dir: File) {
+    tasks.withType<ProcessResources> {
+        doFirst {
+
+        }
+    }
+}
+
+fun Project.configureAddons() {
+    tasks.withType<ProcessResources> {
+        project(":common:addons").subprojects.forEach {
+            it.afterEvaluate {
+                dependsOn(it.tasks.getByName("build")) // Depend on addon JARs
+            }
+        }
+    }
+}