contentState motivation is not defined in any context

[azaroth42]

Propose to put it in prezi3 context.

[azaroth42]

And put all search definitions into prezi3 context, as prezi3 needs at least the service types. Thus the additions which are less relevant are: ignored, contextualizing plus Autocomplete properties.

[azaroth42]

Also the annex of selectors.

[kirschbombe]

I added contentState and contextualizing motivations to prezi context here: https://github.com/IIIF/api/pull/2305.