cleanup build.gradle files

build.gradle

@@ -1,3 +1,8 @@
+plugins {
+    id 'java'
+    id 'com.gradleup.shadow' version "8.3.5"
+}
+
 allprojects {
     group = 'de.mhsl.craftattack'
     version = '1.0.0'
@@ -20,10 +25,25 @@ allprojects {
 
 subprojects {
     apply plugin: 'java'
+    apply plugin: 'com.gradleup.shadow'
 
     java {
         toolchain {
             languageVersion = JavaLanguageVersion.of(21)
         }
     }
+}
+
+configurations {
+    shadowImplementation.extendsFrom implementation
+}
+
+shadowJar {
+    configurations = [project.configurations.shadowImplementation]
+    archiveClassifier.set('')
+
+    relocate 'org.apache.httpcomponents', 'eu.mhsl.lib.shadow.httpclient'
+    relocate 'com.sparkjava', 'eu.mhsl.lib.shadow.spark-core'
+
+    mergeServiceFiles()
 }