[android] add #toString override for formatted sections

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/types/Formatted.java

@@ -58,4 +58,12 @@ public class Formatted {
   public int hashCode() {
     return Arrays.hashCode(formattedSections);
   }
+
+  @Override
+  public String toString() {
+    return "Formatted{"
+      + "formattedSections="
+      + Arrays.toString(formattedSections)
+      + '}';
+  }
 }

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/types/FormattedSection.java

@@ -228,4 +228,14 @@ public class FormattedSection {
     params.put("text-color", textColor);
     return new Object[] {text, params};
   }
+
+  @Override
+  public String toString() {
+    return "FormattedSection{"
+      + "text='" + text + '\''
+      + ", fontScale=" + fontScale
+      + ", fontStack=" + Arrays.toString(fontStack)
+      + ", textColor='" + textColor + '\''
+      + '}';
+  }
 }