Add ability to download subpath archive (#36371)

closes: https://github.com/go-gitea/gitea/issues/4478

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Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

options/locale/locale_en-US.json

@@ -977,6 +977,7 @@
   "repo.fork.blocked_user": "Cannot fork the repository because you are blocked by the repository owner.",
   "repo.use_template": "Use this template",
   "repo.open_with_editor": "Open with %s",
+  "repo.download_directory_as": "Download directory as %s",
   "repo.download_zip": "Download ZIP",
   "repo.download_tar": "Download TAR.GZ",
   "repo.download_bundle": "Download BUNDLE",