Add withCredentials property

[mfrro]

Related Issue: #283

Adds optional withCredentials property, which adds credentials to CORS requests, when set to true.

[binaryfire]

Would be great if we could get this merged.

[ffxsam]

This is an absolutely critical feature. Could someone please merge this? Otherwise, a fork might be in order.

[ffxsam]

@Norserium @DerZade One last check before we set up a private package repo and fix this for our own uses.

[Norserium]

@ffxsam, I will investigate this issue soon.

I'm not sure that we need to add the additional prop withCredentials, because you actually can pass 'with-credentials' to crossOrigin prop.

But perhaps, I need to add the passing of this property to getImageData.

[ffxsam]

If the intended usage is <Cropper cross-origin="with-credentials" .../>, this isn't documented here:

https://advanced-cropper.github.io/vue-advanced-cropper/components/cropper.html#props

[naflcosta]

Hello, what is the status of this PR? I also need it to be able include credentials in the request.. 🙏 Thank you.