feat(data): implement Viem lib alternative to SemaphoreEthers

[sumitvekariya]

This adds a Viem-based alternative to SemaphoreEthers, allowing developers to choose their preferred Ethereum library for @semaphore-protocol/data package.

Description

This PR implements the SemaphoreViem class in the @semaphore-protocol/data package, which provides a Viem-based alternative to the existing SemaphoreEthers class.

• What kind of change does this PR introduce? This is a feature addition that introduces a new class for interacting with the Semaphore smart contract using the Viem library.

• What is the current behavior? Currently, the data package only offers Ethers.js integration through the SemaphoreEthers class.

• What is the new behavior? Developers can now choose between Ethers.js and Viem when interacting with the Semaphore smart contract.

• Does this PR introduce a breaking change? No, this is an additive change that doesn't affect existing functionality.

The implementation includes:

• Full implementation of all methods available in SemaphoreEthers:
  • getGroupIds
  • getGroup
  • getGroupMembers
  • getGroupValidatedProofs
  • isGroupMember
• Implementes tests
• Proper TypeScript types for Viem-specific interfaces
• Documentation for all methods and parameters

Related Issue(s)

Closes #343

Other information

The Viem library is known for being lighter and more efficient than Ethers.js, which may lead to performance improvements for applications using this implementation.

Checklist

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have run yarn format and yarn lint without getting any errors
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[openzeppelin-code]

feat(data): implement Viem lib alternative to SemaphoreEthers

Generated at commit: f31c19b2e50d35839c2721ce681d2c8b83a84cdb

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	0 0 0 4 15 19
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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