Now SaveImage only supports specified the output_name_formatter which makes it a little complicated for users.
https://github.com/Project-MONAI/MONAI/blob/b1c8b42d03bf3c1daabd6c39a35fcbdadb57e8b0/monai/transforms/io/array.py#L393C14-L393C14

Add support specified filename for users to save like nibabel.save.

Originally posted by @heyufan1995