Instead of handling enums specially in the code generation templates, create a specialization of `IPADataSerializer` that handles enums. Every enum is serialized as a `uint32_t`, with `static_assert` to ensure that every possible value fits. Previously, enums were (de)serialized in `(de)serializer_field()` based on the size of their underlying types. Afer this change, every enum is uniformly handled as a `uint32_t`. Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>