bevy_reflect: Rename UntypedReflectDeserializer to ReflectDeserializer

[MrGVSV]

Objective

We have ReflectSerializer and TypedReflectSerializer. The former is the one users will most often use since the latter takes a bit more effort to deserialize.

However, our deserializers are named UntypedReflectDeserializer and TypedReflectDeserializer. There is no obvious indication that UntypedReflectDeserializer must be used with ReflectSerializer since the names don't quite match up.

Solution

Rename UntypedReflectDeserializer back to ReflectDeserializer (initially changed as part of #5723).

Also update the docs for both deserializers (as they were pretty out of date) and include doc examples.

I also updated the docs for the serializers, too, just so that everything is consistent.

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Changelog

• Renamed UntypedReflectDeserializer to ReflectDeserializer
• Updated docs for ReflectDeserializer, TypedReflectDeserializer, ReflectSerializer, and TypedReflectSerializer

Migration Guide

UntypedReflectDeserializer has been renamed to ReflectDeserializer. Usages will need to be updated accordingly.

- let reflect_deserializer = UntypedReflectDeserializer::new(&registry);
+ let reflect_deserializer = ReflectDeserializer::new(&registry);

[alice-i-cecile]

Much nicer naming :) The new docs are great too.

[pablo-lua]

Much more clearer name to me, as can be strange naming this UntypedReflectDeserializer but not naming the Serializer UntypedReflectSerializer. This changes make much more sense.