Fix remaining type mismatches vs Python reference

- RotorSettings: Diversity float64→string, Energy float64→int, add Mood int and MoodEnergy string
- Ratings: Rating float64→int, add Week int and Day int
- MetatagArtistEntry: Remove Score float64 (not in Python), add PopularTracks []Track
- MusicHistoryItemData: Remove Progress float64 (not in Python)

internal/models/artist.go

@@ -162,8 +162,10 @@ func (a *Artist) DeList(data []byte, c ClientInterface) ([]Model, error) {
 
 // Ratings represents artist ratings.
 type Ratings struct {
-	Rating float64 `json:"rating"`
-	Votes  int     `json:"votes"`
+	Rating int    `json:"rating"`
+	Votes  int    `json:"votes"`
+	Week   int    `json:"week"`
+	Day    int    `json:"day"`
 }
 
 // Counts represents artist counts.