fix: Set archive directory size to zero.

Fixes problem with extracting the custom "empty template".

src/init.rs

@@ -597,6 +597,7 @@ impl TemplateBuilder {
  let create_directory_header = |path: &str| -> io::Result<Header> {
  let mut header = Header::new_gnu();
  header.set_entry_type(EntryType::Directory);
+ header.set_size(0);
  header.set_path(path)?;
  header.set_mtime(mtime);
  header.set_mode(0o775);