feat: Add contract deployment script for testnet and mainnet

[jotel-dev]

closes #374

• Add scripts/deploy.sh bash script for automated deployment
• Remove *.sh from .gitignore to allow deployment scripts
• Update README with bash script deployment instructions
• Support --network testnet|mainnet flag
• Validate required env vars (DEPLOYER_SECRET, ADMIN_ADDRESS, TREASURY_ADDRESS, FEE_RATE_BPS)
• Save contract ID and tx hashes to deployment-info.json

Description

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test addition or update

Breaking Changes

Breaking Changes:

Migration Guide:

Screenshots/Demo

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• 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
• Any dependent changes have been merged and published
• I have checked for breaking changes and documented them if applicable

Additional Notes