Improve gradle performance significantly

Signed-off-by: solonovamax <solonovamax@12oclockpoint.com>

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

@@ -3,11 +3,10 @@ package com.dfsek.terra
 import org.gradle.api.JavaVersion
 import org.gradle.api.Project
 import org.gradle.api.plugins.JavaPluginConvention
+import org.gradle.api.tasks.bundling.Jar
 import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.javadoc.Javadoc
-import org.gradle.kotlin.dsl.configure
-import org.gradle.kotlin.dsl.filter
-import org.gradle.kotlin.dsl.withType
+import org.gradle.kotlin.dsl.*
 import org.gradle.language.jvm.tasks.ProcessResources
 
 fun Project.configureCompilation() {
@@ -35,4 +34,19 @@ fun Project.configureCompilation() {
     tasks.withType<Javadoc> {
         options.encoding = "UTF-8"
     }
+
+    tasks.withType<Jar> {
+        archiveBaseName.set("Terra-${archiveBaseName.get()}")
+        from("../LICENSE", "../../LICENSE")
+    }
+
+    tasks.register<Jar>("sourcesJar") {
+        archiveClassifier.set("sources")
+    }
+
+    tasks.register<Jar>("javadocJar") {
+        dependsOn("javadoc")
+        archiveClassifier.set("javadoc")
+        from(tasks.getByName<Javadoc>("javadoc").destinationDir)
+    }
 }