feat: as an option show the item's rating and whether it is marked as a favorite

app/src/main/java/com/cappielloantonio/tempo/util/MusicUtil.java

@@ -195,6 +195,21 @@ public class MusicUtil {
         return context.getString(R.string.label_placeholder);
     }
 
+    public static String getRatingNumber(Integer ratingNumber) {
+        if (ratingNumber == null || !Preferences.showItemRating()) return "";
+
+        StringBuilder builder = new StringBuilder();
+
+        builder.append("•");
+        builder.append(" ");
+
+        for (int i = 0; i < ratingNumber; i++) {
+            builder.append("★");
+        }
+
+        return builder.toString();
+    }
+
     public static String forceReadableString(String string) {
         if (string != null) {
             return getReadableString(string)