create missing dirs when symlinking files

Author: tykling

src/bma_client_lib/bma_client.py

@@ -378,6 +378,7 @@ def upload_file(self, path: Path, attribution: str, file_license: str) -> dict[s
         # create symlink to file in workdir
         workpath = self.path / r.json()["bma_response"]["links"]["downloads"]["original"][1:]
         if not workpath.exists():
+            workpath.parent.mkdir(exist_ok=True)
             workpath.symlink_to(path)
 
         return r.json()  # type: ignore[no-any-return]