Add Social Login - Like Facebook, Google

[totiz]

[totiz]

Motivation To make Libra Wallet look & feel like real wallet I think we should have at least Social login or email login, but since we don't want to store any sensitive datas on our server (password for example) right now, so email login is not possible, may be the best choice is Facebook and Google login as it quite easy for user because other popular services have this feature as well.

Plan

1. Social login should be configured on/off (that allow forked project can disable this feature).
2. When social login config's on, we enforce everyone to sign in first before use this wallet.
3. User can login on another smart phones or devices with the same social id, but the mnemonic phrase user need to backup by themselves (that correctly don't have this feature yet).
4. May be if we done this feature we can use this for https://github.com/kulapio/libra-wallet-poc/issues/23

[Nokomy]

Still watching....but am working too...the right time to come in with the Nigerian narrative to all these...

[suraneti]

I'm going to implement google sign in, any suggestions where to put google sign in button on the screen?

[totiz]

@suraneti no idea for now, just try put some and lets discuss after that