Add Deployments for Optimism Sepolia and Fuji Testnet

[Patrick-Ehimen]

Description

This PR adds support for deploying the CREATE3Factory contract to Optimism Sepolia and Fuji Testnet. The changes includes issues from #14 and #8 :

1. Added RPC Endpoints:

• Added RPC endpoints for optimism-sepolia and fuji in foundry.toml.
• Updated .env.example with placeholders for the new RPC URLs.

2. Created Deployment Files:

• Added deployments/optimism-sepolia.json and deployments/fuji.json to track the CREATE3Factory contract addresses on these networks.

3. Etherscan Verification (Optional):

• Added Etherscan configuration for optimism-sepolia and fuji in foundry.toml to support contract verification.

4. Updated Documentation:

• Updated the README.md file to include Optimism Sepolia and Fuji Testnet under the Testnets section.

Changes

Added Files:

• deployments/optimism-sepolia.json
• deployments/fuji.json

Modified Files:

• foundry.toml: Added RPC endpoints and Etherscan configuration for optimism-sepolia and fuji.
• .env.example: Added placeholders for RPC_URL_OPTIMISM_SEPOLIA and RPC_URL_FUJI.
• README.md: Updated the Deployments section to include the new testnets.

Checklist

• Added RPC endpoints for optimism-sepolia and fuji in foundry.toml.
• Updated .env.example with placeholders for the new RPC URLs.
• Created deployment files for optimism-sepolia and fuji.
• Updated README.md to include the new testnets.
• Tested deployment and verification on both networks.

This PR is ready for review! Let me know if there are any additional changes or improvements needed. 🚀