Support for Octopus Agile pricing

[PhilDye]

Support for half-hourly Octopus Agile would be great; I gather these via the integration at https://github.com/BottlecapDave/HomeAssistant-OctopusEnergy, although this does not appear to expose the next days’ worth of prices as sensors, only a ready-made card.

[PhilDye]

I’ve found that the future prices are available as attributes on the sensor;

[jonasbkarlsson]

Since the time resolution is different to the price sources currently supported, it will probably be a too large effort to add support to Octopus Agile in short-term. However, to have finer time resolution than one hour is also mentioned in #88, and eventually that needs to be supported.