Add Favicon to Hyku Commons homepage

[ndroark]

Summary

Pals would like to be able to have a home page favicon for [Hyku Commons[(https://hykucommons.org/) set up through html.

Tasks

The app/helpers/hyrax_helper.rb has a favicon method; which does not appear to be called in app/views/_head_tag_extras.html.erb nor app/views/hyrax/homepage/browserconfig.xml.erb. Consider leveraging the helper method to handle favicon switching so that we're not relying so much on the Site&.favicon&.url() idiom; and instead going favicon&.url(). (Note this is conjecture by Jeremy)

• Review feasibility of using the favicon helper method instead of the chained methods of the above views.
• Add the hard-coded proprietor favicon to the repository
• For cases where there's no Site (e.g. we're on the proprietor page), use the hard-coded proprietor favicon

Acceptance Criteria

• As a user, when I am on https://hykucommons.org/, I see a favicon

Testing Instructions

Navigate to proprietor homepage. Icon should show on tab.

[jillpe]

This functionality is already there? See here Were there additional features you were hoping would be a part of that?

[ndroark]

We have that functionality for each tenant, but not for the Hyku Commons homepage itself. I don't think we actually care about superadmins having the ability to change it, we would just like to add one through the html.

[jillpe]

@ndroark Can you share the fav icon image with us?

[ndroark]

[laritakr]

✅ Passes QA