Common interface for Files / Media types

[matthewcare]

The introduction of additional media types is welcomed; however when looping over media, it's frustrating to access common properties such as UmbracoBytes and UmbracoExtension, as there isn't anything to cast to which contains these properties.

It's also slightly inconsistent with all media types containing an UmbracoFile property with a path to the file, except for Image which instead contains the entire image cropper value.

I would like to see a common interface so that I can avoid doing this when I need to display the file type and size.

public interface IUmbracoFile : IPublishedContent
{
    long UmbracoBytes { get; }
    string UmbracoExtension { get; }
    
    string FormattedFileSize => UmbracoBytes.ToDisplayString();
}

public partial class File : IUmbracoFile { }
public partial class Image : IUmbracoFile { }
public partial class UmbracoMediaArticle : IUmbracoFile { }
public partial class UmbracoMediaAudio : IUmbracoFile { }
public partial class UmbracoMediaVectorGraphics : IUmbracoFile { }
public partial class UmbracoMediaVideo : IUmbracoFile { }

I know it would be a breaking change, but renaming to
UmbracoMediaFile and UmbracoMediaImage might also help make things a bit more consistent