Support IIIF drag and drop

[ronnymikalsen]

Bug, feature request, or proposal:

Feature

What is the expected behavior?

As a user, if I find a IIIF drag and drop manifest on the web, I want to drag that icon to the viewer so that I can view it

What is the current behavior?

Drag and drop is not supported

What are the steps to reproduce?

1. Open NGX-Mime

2. Go to https://digital.bodleian.ox.ac.uk/inquire/Discover/Search/#/?p=c+1,t+(%2215af6b00-e09c-4cbd-8a2a-6ed4ffd4d1a7%22%20OR%20%228a9d30b9-81fa-4c70-a49b-c2037fc75d7b%22%20OR%20%228daf7bf8-31d8-474d-baf9-ddaf79eefb85%22%20OR%20%2265ddd007-4da9-4887-aba7-88e64ca624d4%22%20OR%20%22da82b41f-37b6-4025-a986-60cf6f90e4a8%22%20OR%20%2250215523-6f3c-4156-b595-80b114cee1f5%22%20OR%20%222d6dfc9f-2ab9-46bf-9b32-e52f0e6eabb3%22%20OR%20%22e4c98007-81c8-4670-ad42-777faa2987e5%22%20OR%20%220926eb37-bc7a-4846-8714-0f47eb5f8c74%22%20OR%20%2203876a3a-5ea3-4b17-84c0-94d2e306e642%22%20OR%20%22d7e8b422-1d60-416d-87b8-c236512af070%22%20OR%20%22be38e306-2a16-4dfb-aaff-64dc2c13cc9d%22%20OR%20%22de8258ff-af60-401c-a362-6a60aebfb7ce%22%20OR%20%2289523ebe-296d-49fe-b5a9-77671c8383da%22%20OR%20%22c6f86f5b-6451-45fb-89b2-ad75c1cc533f%22%20OR%20%220a339c46-b28a-4a0e-a5ac-b53a3d100da5%22%20OR%20%22f14d80d6-5a8c-44a0-8a82-6888035b498a%22%20OR%20%228733f07e-1c5d-43c8-a59b-f782c7d070c7%22),rsrs+0,rsps+20,fa+,so+ox%3Asort%5Easc,scids+,pid+89523ebe-296d-49fe-b5a9-77671c8383da,vi+2b6381eb-3b47-4090-b525-5343f4699088

3. Drag the IIIF icon to NGX-Mime

What is the use-case or motivation for changing an existing behavior?

I want to view other libraries objects in NGHX-Mime

Which versions of Angular, OS, TypeScript, browsers are affected?

Is there anything else we should know?