Properly show symlinks in Mode

Previously they were extracted OK (as symlinks), but shown
as regular files with length 0 when getting the file info.

file_info.go

@@ -53,6 +53,9 @@ func (f fileInfo) Mode() fs.FileMode {
 	if f.IsDir() {
 		return fs.FileMode(f.perm | uint32(fs.ModeDir))
 	}
+	if f.IsSymlink() {
+		return fs.FileMode(f.perm | uint32(fs.ModeSymlink))
+	}
 	return fs.FileMode(f.perm)
 }
 
@@ -64,6 +67,10 @@ func (f fileInfo) IsDir() bool {
 	return f.fileType == inode.Dir || f.fileType == inode.EDir
 }
 
+func (f fileInfo) IsSymlink() bool {
+	return f.fileType == inode.Sym || f.fileType == inode.ESym
+}
+
 func (f fileInfo) Sys() any {
 	return nil
 }