Added GH Workflow to publish to NPM

[farhanW3]

PR-Codex overview

This PR updates the version of @thirdweb-dev/engine to 0.0.6 and adds a GitHub workflow for publishing to npm with specific version tagging.

Detailed summary

• Updated package version to 0.0.6
• Added GitHub workflow for npm publishing
• Workflow includes steps for version retrieval, building, and publishing to npm with specific tag

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