examples/performance-thread: add packet type parsing

examples/performance-thread: add packet type parsing

Last changes in Niantic and Fortville NIC drivers causes that
vector Rx path is chosen by default in l3fwd-thread application.
This path doesn't support propagation of hw packet type recognition
to the packet_type field in mbuf, and packets cannot be classified
properly.

The approach to solve this problem is similar to the commit:
71a7e2424e07 ("examples/l3fwd: fix using packet type blindly").

To use sw packet analyzer, new command line option "--parse-ptype" is
introduced.

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>