feat(util): add archive extraction utility

src/main/java/de/hftstuttgart/utils/ArchiveUtil.java

+package de.hftstuttgart.utils;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.*;
+import java.nio.file.Path;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class ArchiveUtil
+{
+    private static final Logger LOG = LogManager.getLogger(ArchiveUtil.class);
+
+    public static void extractProjectFromZip (InputStream is, Path outDir) throws IOException
+    {
+        LOG.info(String.format("starting archive extraction to %s", outDir.toAbsolutePath().toString()));
+        try (ZipInputStream stream = new ZipInputStream(is)) {
+
+            ZipEntry entry;
+            while ((entry = stream.getNextEntry()) != null) {
+                File file = outDir.resolve(entry.getName()).toFile();
+                LOG.debug(String.format("processing entry %s", file.getAbsolutePath()));
+
+                if (!entry.isDirectory()) {
+                    LOG.debug("creating parent folders");
+                    file.getParentFile().mkdirs();
+
+                    LOG.debug("creating new file");
+                    file.createNewFile();
+
+                    byte[] buffer = new byte[2048];
+                    try (FileOutputStream fos = new FileOutputStream(file);
+                         BufferedOutputStream bos = new BufferedOutputStream(fos, buffer.length)) {
+
+                        LOG.debug("writing content from zip entry to file");
+                        int len;
+                        while ((len = stream.read(buffer)) > 0) {
+                            bos.write(buffer, 0, len);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+}