Merge branch 'chore/add-build-cs108-task' into 'main'

Chore: Add build-cs108 Gradle task and javadocJar

See merge request cs108-fs26/Gruppe-13!57

build.gradle

@@ -108,3 +108,17 @@ tasks.register('fatJar', Jar) {
         configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
     })
 }
+
+    tasks.register('javadocJar', Jar) {
+        group = 'build'
+        description = 'Assembles a Javadoc JAR.'
+        dependsOn tasks.named('javadoc')
+        archiveClassifier = 'javadoc'
+        from(tasks.javadoc.destinationDir)
+    }
+
+    tasks.register('build-cs108') {
+        group = 'build'
+        description = 'Produces executable JAR and Javadoc JAR for CS108.'
+        dependsOn tasks.named('fatJar'), tasks.named('javadocJar')
+    }