Create comprehensive GitHub Copilot instructions for SEQICO smart contract deployment

[Copilot]

This PR creates comprehensive GitHub Copilot instructions (/.github/copilot-instructions.md) that enable developers to work effectively with the SEQICO smart contract deployment repository from a fresh clone.

Key Features

Validated Commands: All commands have been tested and validated to work correctly:

• npm install --force - Resolves Hardhat toolbox dependency conflicts
• npx hardhat compile - Successfully compiles 8 Solidity files
• npx hardhat test - Runs comprehensive deployment validation tests
• npx hardhat run scripts/deploy.js --network hardhat - Deploys SEQICO and SEQToken contracts

Critical Fixes Made:

• Fixed hardhat.config.js for ES modules compatibility (import/export syntax)
• Fixed deployment scripts for ES module imports
• Fixed Ownable constructor calls for OpenZeppelin v5 compatibility
• Updated package.json dependencies to resolve version conflicts

Comprehensive Testing:

• Created deployment test suite validating contract deployment and token distribution
• Manual validation of complete deployment workflow
• Verified both deployment scripts work correctly on local network

Timing and Timeout Guidance:

• Measured execution times for all operations
• Provided explicit timeout recommendations (5+ minutes for install, 3+ minutes for compile/test)
• Added "NEVER CANCEL" warnings for long-running operations

Developer Experience:

• Imperative tone throughout ("Run this command", "Do not cancel")
• Common issues and solutions documented
• Repository structure and key files explained
• Network configurations and environment variables detailed

The instructions follow the requirement to provide a firm directive to always follow the instructions first, with fallback to search only when information is incomplete or incorrect.

Fixes #17.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[sonnyquinn24]

Done