fix: dataProtector core fix ci

[Le-Caignec]

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[Copilot]

Pull Request Overview

This PR implements CI/CD fixes and adds support for Arbitrum mainnet deployment. The changes refactor the deployment infrastructure by replacing the old workflow with a new modular CI/CD system and updating configuration to support multiple blockchain networks.

• Replaced old deployment workflow with new modular CI/CD system using reusable workflows
• Updated environment variable names for consistency (WALLET_PRIVATE_KEY → DEPLOYER_PRIVATE_KEY, ARBISCAN_API_KEY → EXPLORER_API_KEY)
• Added support for Arbitrum mainnet network configuration and flexible API key management

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/smart-contract/package.json	Added coverage script and reordered deploy script
packages/smart-contract/hardhat.config.ts	Refactored network configurations and added Arbitrum mainnet support
packages/smart-contract/config/env.ts	Updated environment variable names and added API verification configuration
packages/smart-contract/CHANGELOG.md	Added changelog entry for CI fixes and Arbitrum mainnet support
packages/smart-contract/.nvmrc	Set Node.js version to 20
packages/smart-contract/.env.template	Updated environment variable names in template
.github/workflows/deploy-smart-contract.yml	Removed old deployment workflow
.github/workflows/core-smart-contract-deploy.yml	Added new deployment workflow with network selection
.github/workflows/core-smart-contract-ci.yml	Added new CI workflow with coverage and static analysis

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[Le-Caignec]

LGTM