Different array exports of octets

[jaromil]

Add more functions similar to the octet:array()method to export the contents of octets in different array formats:

• array of bytes (8bit)
• array of words (16bit)
• array of double-words (32bits)
• array of quad-words (64bits, check support in native LUA Number type)
• array of double-quad-words (128bits, check support in native LUA Number type)

Also include option for exporting the array as a big-endian or little-endian sequence.