Gets a file's information from the Media Manager by fileUrl.
The getFileInfo() function returns a Promise that resolves to information about
the specified file.
The file's Wix media URL in the following format: 'wix:image://v1//#originWidth=&originHeight=[&watermark=]'.
Note: This replaces the old fileName parameter. fileName will continue to work, but we recommend that you use the updated fileUrl parameter instead.
This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.