Make our IIIF manifest more robust in terms of descriptive metadata (Twig task)

[DiegoPino]

What?

Right now we are being discreet and modest in the amount of descriptive metadata we permeate to the IIIF Manifest V2 and V3. We should hopefully accommodate all metadata that we display on HTML here or at least a big part of Subjects/terms/LoD in general too

Why?

Complex WorkSeries and Books with Page level metadata need to show that when traversing each sequence via Mirador

Code?

Not much, mostly Twig templates. But, we should also make sure that IA Bookreader uses the metadata in its display.

@aksm @alliomeria