Write Configuration command requires Read Command first to fill values

[muenchris]

This is confusing to the User that there is a "Read configuration". They should only write and the read should happen silently (not as a visible command).

Suggestion: Allow to "hide" a command group from the UI and put these commands in there.

See my PR on the LG Batteries for the command group "Internals". Somthing like this:

  read_configuration:
    group: internals
    ui:
      hidden: true