Permissions are not copied in raw_copy_file_rename

[dzamlo]

When using the raw_copy_file_rename method (and the raw_copy_file method that call it), the permission are not copied.

The issue is with this line:
https://github.com/zip-rs/zip/blob/7edf2489d5cff8b80f02ee6fc5febf3efd0a9442/src/write.rs#L610

When calling the setters on FileOptions, the original one is not modified because the struct is Copy and thus the method is called with an implicit copy and not a reference to the original one.

[zamazan4ik]

@dzamlo Thanks for the issue! Maybe you already have the proper fix for the library? Any PR is welcome!

[zamazan4ik]

Fixed in #264