Add Genesys Mainnet

[Zhangnong]

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PR-Codex overview

This PR introduces support for the Genesys Mainnet in the codebase, adding it as a new blockchain definition.

Detailed summary

• Updated .changeset/serious-bulldogs-agree.md to include the addition of Genesys Mainnet.
• Exported genesys from src/chains/index.ts.
• Created src/chains/definitions/genesys.ts with details for Genesys Mainnet, including:
  • ID: 16507
  • Native currency: GSYS
  • RPC URL: https://rpc.genesys.network
  • Block explorer: https://gchainexplorer.genesys.network
  • Set as non-testnet.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 21209ab

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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