feat: add Cronos zkEVM chain support

[boavenn]

Adds Cronos zkEVM chain support.

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PR-Codex overview

This PR adds support for the cronoszkEVM chain in the project.

Detailed summary

• Added cronoszkEVM chain to chains/index.ts
• Created cronoszkEVM definition in chains/definitions/cronoszkEVM.ts
• Defined chain properties like ID, name, native currency, RPC URLs, and block explorers.

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🦋 Changeset detected

Latest commit: 3709214

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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