cli: add a utility module

this will be used by cli app.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
cli: add a utility module

this will be used by cli app.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
cli: add cli app

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
cli: completion of logger names for set_log_level command

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
cli: sample config