Water-heater entity support

[h0nz4gem]

Hello,
I'm not sure if it's intentional or not, but the simple-thermostat-card supports displaying the "water-heater" entity (which currently doesn't have many other ways to be displayed in Lovelace). Would it be possible to add the "operation_list" attribute under the control config so that buttons can be used to toggle modes, similar to how it's possible for HVAC modes, for example?

Here is an image of the attributes of the water_heater entity:

Second question
Would it be possible to add a feature that allows disabling modes from which the target temperature can be adjusted using the buttons?

Something like this:
Automatic mode with disabled "+-" buttons:

Manual mode with enabled "+-" buttons:

Otherwise great job, thank you.