Added new methods to BitOperator and corresponding test cases
BitOperator now splits in Big Endian order. Therefore the VlanTag had to
be modified to take this into account.
Added RawDataUnit as a sub-type of ProtocolDataUnit for raw byte data
Modified EthernetFrame and added unit test
Changed byte[] to Byte[] nearly everywhere so it can be used in an
ArrayList (specifically an own sub-type called PrimitveArrayList which
provides a method for adding arrays to the array list)
Added BytePrimitiveConverter which provides a method for converting a
byte-class-array into a byte-primitive-array
Every new added class was also tested with a unit test