Document how to call magic contracts directly with a web3 library

[Dr-Electron]

Is your feature request related to a problem? Please describe.

Some functions like the once related to allowance need to be called by the user directly so we should mention how to do this with libs like ethers and web3 (one should be enough)

Describe the solution you'd like

Ideally this is just another Tab beside Solidity | Web3 | Testing | WASP CLI