feat: return raw and spellchecked sentence

[simon-tannai]

If spellchecking option is setted into bot's configuration, return spellchecked sentence and raw sentence.

Why ? Because in some extractors, spellchecking will fix some words who must not be fixed. Example: forename (simon become sinon), postal address (rue moissonnier besoin rue poissonnier).

With this feature, we are able to choose on each exactor if we want to use spellchecked sentence of raw sentence.