Returns the mime-type of a binary and optionally a normalized file-name.
bin_mime_type(binary()) :: {:ok, String.t()} | :error
file_mime_type(String.t()) :: {:ok, content_type :: String.t(), filename :: String.t()} | {:error, any()} | :error
file_mime_type(String.t()) :: {:ok, String.t()} | {:error, any()} | :error
