[D4.5] Develop and Deploy NFT Smart Contracts on Soroban

[joaquinsoza]

Description: Create and deploy NFT smart contracts on Soroban, including a factory contract for minting NFTs.

Tasks:

• Write and test NFT smart contracts in Rust for Soroban.
• Deploy the smart contracts on the Soroban testnet.
• Create a factory contract that handles minting and charges a small fee for using the service.
• Test the entire minting process with the deployed contracts.