Add upload file option

[I-am-Orion]

Please add "upload file" option so that we can deobfuscate bigger size file and also add a "download" button to download the deobfuscated code.

[I-am-Orion]

Please add a "download" button too, so that we can download the deobfuscated code. Because somtimes bigger size code is hard to copy paste.

[lelinhtinh]

This application works on the client, its processing power depends on your browser.
It isn't difficult to read and export large files with Blob.slice(). However, to decode must use full source code, which can cause browser overload.
I know my current decryption algorithm has many performance vulnerabilities, but it's not too much to handle large files.
Hope I'm wrong, I will try your idea.

[lelinhtinh]

Resolved issues in v1.5.0