add byte arrays to TypesStreams

src/main/java/de/tudbut/io/TypedInputStream.java

@@ -115,6 +115,18 @@ public class TypedInputStream {
         }
         return booleans;
     }
+
+    public byte[] readByteArray() throws IOException {
+        byte[] bytes = new byte[readInt()];
+        int n = 0;
+        while ((n += stream.read(bytes, n, bytes.length - n)) != 0);
+        if(n != bytes.length) {
+            byte[] cutBytes = new byte[n];
+            System.arraycopy(bytes, 0, cutBytes, 0, n);
+            return cutBytes;
+        }
+        return bytes;
+    }
     
     public String readString() throws IOException {
         int i = readInt();

src/main/java/de/tudbut/io/TypedOutputStream.java

@@ -118,6 +118,13 @@ public class TypedOutputStream {
         stream.flush();
         return booleans;
     }
+
+    public byte[] writeByteArray(byte[] bytes) throws IOException {
+        int i = bytes.length;
+        writeInt(i);
+        stream.write(bytes);
+        return bytes;
+    }
     
     public String writeString(String string) throws IOException {
         int i = string.length();