Link Tify in IIIF Collections example page

[cmahnke]

A Link to Tify might be added here:
https://iiif.io/api/cookbook/recipe/0032-collection/ - Section "Example Collection"

Since Tify can handle IIIF Collections.

[cmahnke]

This issue should be reworked to also include some outreach activity: There is a subsection on viewers as part of the IIIF Cookbook. Adding Tify to this list of viewers would also include Tify to the collection example page (as described in the original issue) and has the benefit to be included in every other applicable example from the cookbook.