fix: invalid device state after bind

[cmroche]

Immediately call for as state update as soon as the device is bound, add a signal that can be used to check that the device has received it's first state update.

Removed unused, optional, wait_for parameter on update_state and send_device_state

CLOSES #99

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 95.79%. Comparing base (7122cdd) to head (fbf9748). Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
greeclimate/device.py	90.90%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #100      +/-   ##
==========================================
+ Coverage   95.75%   95.79%   +0.04%     
==========================================
  Files           8        8              
  Lines         730      737       +7     
==========================================
+ Hits          699      706       +7     
  Misses         31       31              

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[AnicJov]

Just bumping this PR to say that it worked for me. I wasn't getting any device state even after a bind() and update_state() but this patch fixes that, thanks. I hope it can get merged.