Directory symlinks are ignored while searching for desktop files

[reddraggone9]

freedesktop-desktop-entry/src/iter.rs

Lines 50 to 53 in ccb4e86

	if file_type.is_dir() {
	self.directories_to_walk.push((path_src.clone(), path));
	} else if (file_type.is_file() || file_type.is_symlink())
	&& path.extension().map_or(false, |ext| ext == "desktop")

This follows symlinks to files, but not symlinks to directories. Is that an intentional decision? If not would you be interested in a pull request to add support for recursing through symlinked directories? I can see where a naive implementation would result in an infinite loop if a bad symlink was encountered, so that would need to be handled with care.