Play multiple local files

1. Allow users to play multiple files without copying items to VLC (By Selecting them , tapping Open)

2. Play an entire folder (By clicking on Open after navigating to folder , without selecting any Item) .

Closes #1413 (closed) , (feature request 2 and 3)

Resources/en.lproj/Localizable.strings

@@ -660,3 +660,6 @@
 // MARK: - NEW DELETE STRINGS
 "DELETE_SINGLE_TITLE" = "Delete \"%@\"?";
 "DELETE_MULTIPLE_TITLE" = "Delete \"%@\" and %d others?";
+
+// MARK: - UIDOCUMENT PICKER ALERT STRINGS
+"NO_FILES_SELECTED" = "No files was selected to play";