Fix/separate publish script to prevent half release

[ditwrd]

There's been a few case where AUR, Homebrew or other package repo are linking to an unreleased version of opencode, this is usually caused by build failing on one of the steps where the componenet before it has been publish

This PR try fix to this "half-release" state by changing the order of build and publish

Before: Build opencode --> Publish Opencode --> Build sdk --> Publish sdk --> Build plugin --> Publish plugin --> Github Release

After; Build opencode --> Build sdk --> Build plugin --> Publish Opencode --> Publish sdk --> Publish plugin --> Github Release

[lazarljubenovic]

What is it about this repository specifically that attracts so much slop?