message: add `modality` enum
diff: @@ -79,3 +79,15 @@ pub enum RestrictionReason {
  Product,
  Explict,
  }
  +
  +/// Indicates the modality (major or minor) of a track
  +/// This field will contain a 0 for `minor`, a 1 for `major` or
  +/// a -1 for `no result`
  +///
  +/// [Reference](https://developer.spotify.com/documentation/web-api/reference/tracks/get-audio-analysis/#section-object)
  +#[derive(Clone, Serialize, Deserialize, Copy, PartialEq, Eq, Debug, ToString)]
  +pub enum Modality {
  + Minor,
  + Major,
  + NoResult,
  +}
  \ No newline at end of file
  