[Serializer] Add `NormalizedValueInterface` that can be returned by `NormalizerInterface::normalize` to enable receiving a value object for normalized values.#43498

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bbrala wants to merge 3 commits intosymfony:6.0from

bbrala:feature/normalized-value-interface

Commits on Oct 14, 2021

[Serializer] Add `NormalizedValueInterface` that can be returned by `NormalizerInterface::normalize` to enable receiving a value object for normalized values.
bbrala
committed
[Serializer] Fix codestyle as provided by fabbot
bbrala
committed
[Serializer] Since `NormalizedValueInterface` is a value object, rename the method `getNormalization` to `getValue`
bbrala
committed