[main] fprintf replaced with logging module

Signed-off-by: Sergey Shcherbakov <shchers@gmail.com>
Added Git ignore file

Signed-off-by: Sergey Shcherbakov <shchers@gmail.com>
Added command line arguments support

For now available the next arguments:
  - Help
  - Change port name
  - Change port baudrate (not support by SSerial module)
  - Change BT name
  - Change BT pin code

Signed-off-by: Sergey Shcherbakov <shchers@gmail.com>