getFileContentType
Detects the type of content stored in a file using a path.
The operation is performed with Dispatchers.IO context.
Return
FileContentType.Text for text files, FileContentType.Binary for binary files.
Parameters
path
The path to the file whose content type is to be detected.
Throws
if the path doesn't exist or isn't a regular file.
if an I/O error occurs while detecting the file content type.