Adds faiman_rad and ross models to get_cell_temperature().

[ramaroesilva]

• Closes pvlib.pvsystem.Array.get_cell_temperature does not accept ross and faiman_rad models #2625
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Differently from what was originally discussed with @cwhanse and @echedey-ls, I decided not to include a verification on whether both k and noct are provided within get_cell_temperature. imo, this type of verification should be (and is) done within the temperature.ross function itself and we see that the opposite situation - expected parameters not being provided - is never verified within get_cell_temperature as I imagine it is done within each temperature model function.

@cwhanse about wind and ross model, if that's okay I still included a small note in the wind_speed description to alert ross users that providing a None is enough.