Multiple Upload - code review

Hi all,

I'm trying to create an extension on the Upload library in order to upload multiple files at once. This is my repo in order to check the code.

The main idea I have in my mind is that the extension will try to upload all the files, and then will return an array of all files that failed to upload with each error, for instance:

Code:

- File: some_text.txt Error: The file has invalid format
- File: image.jpg Error: The files width or height is too big
etc

and the files that uploaded successfully ( the CI upload data() ).