Button for ISD2

[aseeus]

Checklist

• I have filled out the template to the best of my ability.
• This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• This issue is not a duplicate feature request of previous feature requests.

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

Would be great to also add buttons for ISD2 in const.py

Describe the solution you'd like

In const.py please add "ISD2" in BUTTON_DEVICE_TYPES and "ISD2": 2 in BUTTON_COUNT

BUTTON_DEVICE_TYPES: Final = ["ISS2", "WSC2", "ISC2", "BRC8", "ISD2"]

and

BUTTON_COUNT = {"BRC8": 8, "ISC2": 2, "ISS2": 2, "WSC2": 2, "ISR2": 2, "ISD2": 2}

I have tested it and it works without any problems

Describe alternatives you've considered

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Additional context

[planbnet]

Done

[aseeus]

Thanks a lot. Really appreciate all your effort