nnc: plugin common lib (Plugin type) (#233)

nnc: plugin common lib (Plugin type) (#233)

* nnc: plugin common lib (Plugin type)

This commit creates common plugin library.
This library will be used by plugins and nnc for communication.

Implemented:
  - Plugin type. Will be used to determinate plugin type and
    for debug also.

Signed-off-by: Vitaliy Cherepanov <v.cherepanov@samsung.com>
* nnc: plugin common lib (Plugin type)

rename typeWrong to typeInvalid
using switch case
add to make file

Signed-off-by: Vitaliy Cherepanov <v.cherepanov@samsung.com>
* nnc: plugin common lib (Plugin type)

make code readable

Signed-off-by: Vitaliy Cherepanov <v.cherepanov@samsung.com>
* remove HLO and LLO from plugin types

Signed-off-by: Vitaliy Cherepanov <v.cherepanov@samsung.com>
* nnc: plugin common lib (Plugin type)

fix build

Signed-off-by: Vitaliy Cherepanov <v.cherepanov@samsung.com>