Add build:packages script and update setup-project action to build
shared packages after npm install. This ensures @automaker/* packages
are compiled before apps can use them.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Introduced a new GitHub Action to streamline project setup in CI workflows. This action handles Node.js setup, dependency installation, and native module rebuilding, replacing repetitive steps in multiple workflow files. Updated e2e-tests, pr-check, and test workflows to utilize the new action, enhancing maintainability and reducing duplication.