feat: Deploy and verify ERC tokens contracts

[RafaDSan]

Feature Request

We are going to launch a live beta version of Swaplace to the community, so it will be necessary to deploy the smart contracts MockERC20.sol and MockERC721.sol so that the users can mint their tokens in the front end (or direct in the blockchain) to test the application!

Describe the Feature Request

• [x] Deploy the Smart Contract of MockERC20.sol and MockERC721.sol from the revision branch to the sepolia network and kakarot network.
• [x] Verify the smart contract on the sepolia network.
• [x] Mint the ERC721 token and check on OpenSea if it has an IPFS picture.

[RafaDSan]

https://sepolia.etherscan.io/address/0xF85dd40c9941643ea0c5D5bf9cea0Ae5fd82E163 - SEPOLIA - ERC20 https://sepolia.etherscan.io/address/0xE6fE918bB0aFBd155e39bdE40A2B4274e6ae4730 - SPEOLIA - ERC721 https://sepolia-explorer.kakarot.org/accounts/0xb2ef52ea71935a334d77d15c9d10a0a26a3ef7a5 - KAKAROT SEPOLIA - ERC20 https://sepolia-explorer.kakarot.org/contracts/0xfe5127768d8a43bc08ffabdd14d01939493b57d7 - KAKAROT SEPOLIA - ERC721

Obs: As the Kakarot network is unavailable at the moment I write this message, it wasn't possible to deploy the smart contracts there, but once it's available again, I'll deploy the contracts.