Deprecating unit conversion utilities

As of Home Assistant Core 2022.10, the following utilities are deprecated:

• homeassistant/util/distance
• homeassistant/util/pressure
• homeassistant/util/speed
• homeassistant/util/temperature
• homeassistant/util/volume

Please use the corresponding static classes from homeassistant/util/unit_conversion:

• DistanceConverter
• PressureConverter
• SpeedConverter
• TemperatureConverter
• VolumeConverter