[Device Support Request] LEDVANCE/Osram Gardenpole RGBW-Lightify

[TheJulianJES]

Is your feature request related to a problem? Please describe.
It's currently not possible to set the power on state on LEDVANCE/(Osram) Gardenpole Lights.

Describe the solution you'd like
To add the 0x01 (save_defaults) command in the 0xfc01 cluster to store the default state.
(This seems like the way for pretty much all LEDVANCE/Osram lights that exist.)

Device signature

{
  "node_descriptor": "<Optional byte1=1 byte2=64 mac_capability_flags=142 manufacturer_code=48042 maximum_buffer_size=64 maximum_incoming_transfer_size=0 server_mask=0 maximum_outgoing_transfer_size=0 descriptor_capability_field=3>",
  "endpoints": {
    "3": {
      "profile_id": 49246,
      "device_type": "0x0210",
      "in_clusters": [
        "0x0000",
        "0x0003",
        "0x0004",
        "0x0005",
        "0x0006",
        "0x0008",
        "0x0300",
        "0x1000",
        "0xfc0f"
      ],
      "out_clusters": [
        "0x0019"
      ]
    }
  },
  "manufacturer": "OSRAM",
  "model": "Gardenpole RGBW-Lightify",
  "class": "zigpy.device.Device"
}

Additional context
The "save_defaults" command already seems to be well-implemented for two models, so I guess the same thing should work for this too.