More ByteChink sugar

src/commonMain/kotlin/net.sergeych.bintools/ByteChunk.kt

@@ -70,6 +70,11 @@ class ByteChunk(val data: UByteArray): Comparable<ByteChunk> {
      */
     val base64 by lazy { data.asByteArray().encodeToBase64Compact() }
 
+    /**
+     * Lazy (cached) view of [data] as ByteArray
+     */
+    val asByteArray: ByteArray by lazy { data.asByteArray() }
+
     /**
      * Concatenate two chunks and return new one
      */