sendImage
Uploads an image for the given channel. Progress can be accessed via callback.
The Stream CDN imposes the following restrictions on image uploads:
The maximum image size is 100 MB
Supported MIME types are listed in StreamCdnImageMimeTypes.SUPPORTED_IMAGE_MIME_TYPES
Return
Executable async Call which completes with Result containing an instance of UploadedFile if the image was successfully uploaded.
Parameters
file
The image file that needs to be uploaded.
callback
The callback to track progress.