automate contract build process

[penDerGraft]

This PR creates a GitHub workflow that will automatically run forge build on any new tag (or on demand with a tag parameter). It will then either 1) add the built artifacts to an existing release for that tag or 2) create a new release with the artifacts if one doesn't exist.

I think this will cut down on all the local build/deploy workflows and help us centralize this a bit more.

---

Note

Adds a workflow that builds Foundry contracts on tag or manual run, extracts ABIs/bytecode, and uploads them to the tag’s GitHub release (creating it if needed).

• CI:
  • Workflow /.github/workflows/release-artifacts.yml:
    • Triggers on tag push and workflow_dispatch with tag input.
    • Checks out the tagged ref, installs Foundry and GitHub CLI, runs forge build.
    • Authenticates gh, creates release if missing, or updates existing one.
    • Uploads artifacts/** to the release (clobber enabled) and prints an upload summary.
• Tooling:
  • Script scripts/extract-artifacts.js:
    • Parses Foundry outputs in out/{Contract}.sol/{Contract}.json for specified contracts.
    • Extracts and writes ABI, bytecode, and deployed bytecode to artifacts/{Contract}/.
    • Outputs a summary and writes contract list to GITHUB_OUTPUT.

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[balesandrew]

sweet!