Important, Add AlphaWallet to popular wallet library

The recent new Dapps don’t write their own code to use web3 provider, they are using different libraries. It is import to add AlphaWallet into those popular libraries.

I find one 👇
- [ ] https://github.com/NoahZinsmeister/web3-react
- [ ] https://github.com/Web3Modal/web3modal
- [ ] https://www.blocknative.com/onboard#

and other libraries similar to 👆

This is very important, otherwise we are don't even have a chance to be see and used by users.