[PROVISIONING] introduce signal table

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] implement signal table

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] introduce signal sending

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] implement signal sending

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] send signal

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] test add signal receiving

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[PROVISIONING] update TODO

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
Merge pull request #8 from jpoutiai/master

implementation for signalling received OTA provisioning