advertise readiness to partner

[philmy]

When a Bullwinkle message is sent before the partner has initialised, an error is logged:

ERROR: no handler for device.send()

[blindman2k]

I suspect thats an unwinnable game. The advertising requires a message in the other direction and who is to say the other partner will be ready at the time.

[philmy]

I've raised an impOS story (118089967) to maybe help with that.