- listing nft
- buy item
- cancel item - delist it
- update listing - the price
- withdraw proceeding - contract get the ETH for the NFT and user can withdraw later
- first we need a minting contract to mint some NFTs to use on NftMarketplace contract
- using 2 contract simpleNFT01 and simpleNFT02
- just using a fix IPFS image to test the NFtMarketplace contract
- 01_ mint and listing