Change devica class of steps counter

[Jopand]

Is your feature request related to a problem? Please describe.

Right now the steps sensor is an enum. This will not show historical. Alues in a graph, bit in a hardly readable enum state multicolored bar. By removing the device class and adding a unit of measurement, it will be shown nicely in a graph.

Replacing the device_class line with the following seems to work: native_unit_of_measurement="steps",

Describe the feature you want

Additional context

No response

[github-actions[bot]]

:wave: @Jopand, your proposal will be considered. Please have some patience. This action was performed automatically.

[Ludy87]

@Jopand check my preview version: https://github.com/Ludy87/xplora_watch/pull/253#issue-1868547742