Various code cleanup. Removed executable flags, added newlines.

app/Generator/Chart/Basic/ChartJsGenerator.php

@@ -134,4 +134,4 @@ class ChartJsGenerator implements GeneratorInterface
 
         return $chartData;
     }
-}
+}

app/Generator/Chart/Basic/GeneratorInterface.php

@@ -70,4 +70,4 @@ interface GeneratorInterface
      */
     public function singleSet(string $setLabel, array $data): array;
 
-}
+}