Add audio player (#11644)

app/javascript/mastodon/components/status.js

app/javascript/mastodon/containers/media_container.js

app/javascript/mastodon/features/audio/index.js

...pt/mastodon/features/status/components/detailed_status.js

...ript/mastodon/features/ui/components/focal_point_modal.js

app/javascript/mastodon/features/ui/util/async-components.js

app/javascript/mastodon/features/video/index.js

app/javascript/styles/mastodon/components.scss

app/views/statuses/_detailed_status.html.haml

app/views/statuses/_simple_status.html.haml

package.json

yarn.lock