Added three chains: Fluence, Fluence Testnet, Fluence Stage

[crystalbit]

This PR aims to add three Fluence chains: mainnet (Fluence), Fluence Testnet and Fluence Stage

Chains exist on chainlist:
https://chainlist.org/chain/9999999
https://chainlist.org/chain/52164803
https://chainlist.org/chain/123420000220

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PR-Codex overview

The focus of this PR is to add support for Fluence, Fluence Testnet, and Fluence Stage chains.

Detailed summary

• Added fluence, fluenceTestnet, and fluenceStage chains
• Defined chain details for Fluence, Fluence Testnet, and Fluence Stage
• Updated chain definitions with RPC URLs, block explorers, and native currency details

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[changeset-bot]

🦋 Changeset detected

Latest commit: 2088ca2

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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