Add ability to track thermostat setpoint or Target Temp

[npstewart87]

I don't use GitHub often so hopefully creating an "issue" is the proper way to do this.

I'm looking to track the set point / target temperature of my Daikin thermostat. I tried creating a helper template sensor but didn't work out that well and just thought it would be an easy update to have the integration report the setpoint.

I graph the temperature of individual spaces in my home and would like to have a line representing the set point/target temp to see how well the spaces maintain their temperature.