IndexSettings bad types

[ElPicador]

• numericFilters is a Seq[String]
• restrictHighlightAndSnippetArrays add it
• offset add it
• length add it
• disableExactOnAttributes add it
• alternativesAsExact is a Seq[String]
• disableTypoToleranceOnAttributes remove
• placeholders add it
• responseFields add it
• maxFacetHits add it Int
• attributesToSnippet, Seq[String] everywhere
• paginationLimitedTo att it
• numericAttributesForFiltering add it Seq[String]
• removeWordsIfNoResults take a Seq[RemoveWordsIfNoResults]
• disablePrefixOnAttributesadd it Seq[String]
• exactOnSingleWordQuery add it Seq[String]