display different attachment types:
https://github.com/corsego/20-active_storage/commit/a932b8e4ce861827da9cc4e86830b1e73ff55565
HTML5 audio and video tags:
https://www.html5tutorial.info/html5-video.php
Displaying Images, Videos, and PDFs:
https://edgeguides.rubyonrails.org/active_storage_overview.html#displaying-images-videos-and-pdfs