Aiosomecomfort

Fix typos and add tests to set_setpoint_cool

When adjusting the temperature, set temporary hold values if not in hold mode

In auto mode, the t-stat want's both values to reliably set the temperature.

Address typos in humidifier and dehumidifier funcitons

**Full Changelog**: https://github.com/mkmer/AIOSomecomfort/compare/0.0.27...0.0.28

Add humidifier / dehumidifier controls and properties.

**Full Changelog**: https://github.com/mkmer/AIOSomecomfort/compare/0.0.26...0.0.27
**Full Changelog**: https://github.com/mkmer/AIOSomecomfort/compare/0.0.25...0.0.27