feat: starknet core package

[mshojaei-txfusion]

Description

This PR introduces Starknet contract support as a new workspace in the monorepo. Key changes include:

• Added new starknet workspace with contract build files
• Implemented contract fetching and validation utilities
• Added support for different contract types (standard, token, mock)
• Set up TypeScript configuration and build pipeline for Starknet contracts

Difference with last PR

Drive-by changes

• Enhanced error handling and validation for contract names
• Added comprehensive type definitions for Starknet contracts
• Cleaned up unused checksum files (.md5, .sha256) from Starknet releases

Related issues

• Related to the Starknet integration initiative (no specific issue number)

Backward compatibility

Yes - This is an additive change that introduces new functionality without modifying existing behavior.

Testing

Manual testing performed:

• Contract fetching and validation
• Build pipeline verification
• Type checking and compilation

[changeset-bot]

🦋 Changeset detected

Latest commit: 08fe83f

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

This PR includes changesets to release 10 packages

Name	Type
@hyperlane-xyz/utils	Minor
@hyperlane-xyz/sdk	Minor
@hyperlane-xyz/widgets	Minor
@hyperlane-xyz/cli	Minor
@hyperlane-xyz/starknet-core	Minor
@hyperlane-xyz/core	Patch
@hyperlane-xyz/infra	Minor
@hyperlane-xyz/helloworld	Minor
@hyperlane-xyz/ccip-server	Minor
@hyperlane-xyz/github-proxy	Minor

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