embedded-services: Add missing serialization to service messages #679
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RobertZ2011
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williampMSFT
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Some serialization/deserialization was omitted because it wouldn't be used by the EC, however the service-message crates can be used outside the EC, so add them in.
I experimented with zerocopy for this in #678 but it's a bit clunky and getting it to work for Battery messages will be challenging, so just rolled it by hand for now since that's what we are already doing. Can revisit later once we've decided on a serialization strategy.
Tested these by using the service message crates to serialize/deserialize messages over UART in the ratatui and works fine for the ones I could test (though many of the battery commands are not yet supported by the ratatui app).
Was going to wait until OpenDevicePartnership/embedded-batteries#39 is merged, but it seems relying on an updated
embedded-batteriescauses a ton of breakage and headache, so just have functions for converting in here and can update a later time.