resolve_windows_shortcut 2.0.0

Resolve target paths of Windows Shortcut (.lnk) files.

2.0.0

• Rename FileSystemEntityType enum to ShortcutResolverEntityType to avoid conflicts with the dart:io FileSystemEntityType
• Update README sample code to reflect new enum name
• Fix README sample code to check for an error instead of a null output

1.0.0

• Initial version.