Preview Files Before Uploading

this requires preview_files_before_upload to be enabled, currently supported features

• add more files or remove selected
• add extra/custom attributes to be used later for uploaded files ex.focal points

# Send Custom Options With Uploaded Files

• we currently support sending
  • focal points (which are calculated from the top left x:0, y:0) this works perfectly with spatie/image
  • width & height
  • description