🎁 Add video embed to Generic Work

[ShanaLMoore]

This commit allows videos to be embedded into a Generic Work. When the value is present, an embedded video should display.

related:

• https://github.com/scientist-softserv/atla-hyku/pull/34/files

Issue:

• Embed codes for media (see Atla instance) #911

TODO

This PR is already large. I may create sub task for the tickets in attempts to keep this epic of work small. This PR only handles embedding the video for Generic Works, base theme, and in English only.

• Run translations
• Add video embed options to other work types
• Add embedded video to other theme's show pages

Expected Behavior Before Changes

This feature previously did not exist.

Expected Behavior After Changes

A user can create a Generic Work and embed a video. If the value exists, the embedded video will display in the iframe of the show page and the user is able to play it.

When there is an error on the form (ie: an invalid embed link), messages appear to say so:

Notes

[jeremyf]

Given that this is multi-value, you may want to consider the following:

def extract_video_embed_presence
  solr_document[:video_embed_tesim]&.first&.present?
end

This will mirror the eventual call in the partial. Because [""].present? will be true.