lib/RadioMetadata.js: update item info, add orig for bigprincess, add humr

lib/RadioMetadata.js

@@ -140,6 +140,13 @@ RadioMetadata.createBooruSoyURI = id => `x-bs://${id}`
  */
 RadioMetadata.createAppleMusicURI = (track_id, album_id) => `x-am://${track_id}${album_id ? '/' + album_id : ''}`
 
+/**
+ * @public
+ * @params {number} match_id
+ * @returns {RadioMetadata}
+ */
+RadioMetadata.createShazamURI = match_id => `x-sz://${match_id}`
+
 /**
  * @public
  * @params {string} id