Add auto-publish.yml

[mjwilson-google]

This will add an auto-publish workflow to keep the working draft up to date, using spec-prod.

@svgeesus I don't have access to the secrets on the web-midi-api repository. Could you please do the following:

• Review this pull request
• Check if we have an Echinda token already installed in the WebAudio/web-midi-api repository (https://docs.github.com/en/actions/security-guides/using-secrets-in-github-actions#accessing-your-secrets)
• If we don't have an Echinda token, could you please request one (https://github.com/w3c/echidna/wiki/Token-creation) and install it in the repository (https://docs.github.com/en/actions/security-guides/using-secrets-in-github-actions#creating-secrets-for-a-repository)?

This should fix #258 once merged. Sorry this has taken such a long time.

[mjwilson-google]

Looks like I also need to fix some markup.

[mjwilson-google]

Markup issue has been fixed.

[mjwilson-google]

Alternatively, @hoch are you able to check the repo secrets?

[hoch]

I haven't check the GitHub action for the Web MIDI spec. Have you confirmed/tested this PR on the current repo?

[mjwilson-google]

Have you confirmed/tested this PR on the current repo?

It seems like the check is passing. I don't know how to check the auto-publish before merging. We need the Echinda secret though, otherwise it won't work, and I don't have permission to check the repo secrets.

[svgeesus]

We do already have a token for the Web MIDI API specification.

I added it, at WEB_MIDI_ECHIDNA

[svgeesus]

LGTM