add utility methods to read scanned packages of classScanner instances

Author: SirCotare

src/main/java/it/aboutbits/springboot/toolbox/reflection/util/ClassScannerUtil.java

@@ -19,14 +19,20 @@ public static ClassScanner getScannerForPackages(String... packages) {
 
     public static final class ClassScanner implements AutoCloseable {
         private final ScanResult scanResult;
+        private final String[] packages;
 
         private ClassScanner(String... packages) {
+            this.packages = packages;
             this.scanResult = new ClassGraph()
                     .enableAllInfo()
                     .acceptPackages(packages)
                     .scan();
         }
 
+        public String[] getScannedPackages() {
+            return packages;
+        }
+
         @SuppressWarnings("unchecked")
         public <T> Set<Class<? extends T>> getSubTypesOf(@NonNull Class<T> clazz) {
             return scanResult.getClassesImplementing(clazz).loadClasses()