Add "temp_step" configuration variable to MQTT Water Heater integration

Feature Requests
1

Hello

Within the MQTT HVAC integration MQTT HVAC - Home Assistant there is a configuration variable for “temp_step” (Step size for temperature set point.)

Can you please add this configuration variable to the MQTT Water Heater integration too. MQTT Water Heater - Home Assistant

Thank you

3

There is provision for Preciscion but this does not appear to work. Neither does step or temp_step.

precision float (Optional)
The desired precision for this device. Can be used to match your actual water heater’s precision. Supported values are 0.1, 0.5 and 1.0.

Default: 0.1 for Celsius and 1.0 for Fahrenheit.```