* feat: Add `NamedEntityExtractor`component
This component accepts a list of `Document`s which it annotates with named entities. The annotations are stored in the `meta` dictionary of each `Document` under a specific key.
The component currently support two backends for the annotation models: Hugging Face `transformers` and spaCy.
* Address comments
* Expand release note
* Add the `[torch]` extra package specifier to the lazy import
* Remove dead code
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Co-authored-by: Massimiliano Pippi <mpippi@gmail.com>
