Fix path splitting error on Windows

fdroidserver/common.py

@@ -556,7 +556,7 @@ def parse_mirrors_config(mirrors):
 
 def file_entry(filename, hash_value=None):
     meta = {}
-    meta["name"] = "/" + filename.split("/", 1)[1]
+    meta["name"] = "/" + Path(filename).as_posix().split("/", 1)[1]
     meta["sha256"] = hash_value or common.sha256sum(filename)
     meta["size"] = os.stat(filename).st_size
     return meta