Use NamedTuple in service_to_method mapping

[cdce8p]

Proposed change

Use NamedTuple instead of dict to map a service to a method and schema.

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[probot-home-assistant]

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[andre-richter]

lgtm

[cdce8p]

@ludeeus I would be interested in your opinion on this one?
The name and location for ServiceMethodDetails can certainly be improved a bit, but that's what I came up with so far.

[thecode]

LGTM webostv

[cdce8p]

Closing it - It doesn't make much sense to add a generic NamedTuple just for these few integrations.