CldUploadButton Configuration
Props
| Prop Name | Type | Example | 
|---|---|---|
| onClick | function | function (event) { } | 
| onError | function | function (error, widget) { } | 
| onUpload | function | function (result, widget) { } | 
| options | object | { encryption: {...} } | 
| signatureEndpoint | string | "/api/sign-cloudinary-params.js" | 
| uploadPreset | string | "my-upload-preset" | 
The remaining props are spread onto the <button> element for full control of the UI.
It accepts any slot as an usual button.