Provide HLS format for Sound annotations.

[mathewjordan]

This addresses a small issue and sets an HLS mime type for the access filesets and their Canvas annotation body on Audio work Manifests. Previously lines 12-14 were only being applied to Video filesets.

dc-api-v2/src/api/response/iiif/presentation-api/items.js

Lines 9 to 17 in de632cf

	const body = {
	id: buildAnnotationBodyId(fileSet, workType),
	type: bodyType,
	format: isAudioVideo(bodyType)
	? "application/x-mpegurl"
	: fileSet.mime_type,
	height: fileSet.height || 100,
	width: fileSet.width || 100,
	};