Adding wallet connect

[rab554628]

This is very helpful.
Anyone, please add wallet connect and ability to mint more than one NFTs to this module, thanks.

[jarrodwatts]

To change from MetaMask to wallet connect you can switch useMetamask() to useWalletConnect

[nachoiacovino]

Would be fixed when #7 gets merged

[rab554628]

Thanks a lot guys, you are the best.