Add Metal L2

[metallicusdev]

PR-Codex overview

This PR adds support for Metal L2 chain including definitions and configurations.

Detailed summary

• Added metalL2 chain to chains/index.ts and op-stack/chains.ts
• Created metalL2 definition in chains/definitions/metalL2.ts with chain configuration
• Defined chain details such as RPC URLs, block explorers, and contract addresses

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[changeset-bot]

🦋 Changeset detected

Latest commit: 91b395d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
viem	Patch

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[vercel]

@metallicusdev is attempting to deploy a commit to the wevm Team on Vercel.

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[jxom]

This will need to be merged first: ethereum-lists/chains#4675.

[metallicusdev]

@jxom ethereum-lists/chains#5094 has been merged now