ci: create release uploader workflow

[galargh]

This will create a new workflow Upload Release Assets which can be used to do emergency release assets uploads when something goes wrong.

I tested it by triggering https://github.com/filecoin-project/filecoin-ffi/actions/runs/17773290672 on push. It is failing because the action I'm adding here is not available in the tag of the release that we were uploading assets to. It's just a false negative.

[BigLep]

@galargh : I updated RELEASE.md: cae19d6

It seems like this improvement idea would have been useful here: "Add a check to the Releaser workflow to ensure that the created/published release contains the expected assets. If it does not, create them and run the publish-release.sh script to upload the missing assets."

[rvagg]

fine with the name & description fixed

[galargh]

It seems like this improvement idea would have been useful here: "Add a check to the Releaser workflow to ensure that the created/published release contains the expected assets. If it does not, create them and run the publish-release.sh script to upload the missing assets."

Yes, I like it! Let's do it as a separate item though as it will require adding a check for whether the release assets are already there which is new.

[BigLep]

Yes, I like it! Let's do it as a separate item though as it will require adding a check for whether the release assets are already there which is new.

Issue created (#543 ) and I assigned it to @copilot to see how it does... Feel free to take over.

I'll squash and merge.