Create Members SDK Layer 1

[allouis]

Create the initial members sdk - this will be a fairly low level one.

The api it should expose will be like

const Members = require('@ghost/members-sdk');

const members = Members(options); // options can be undefined, for now...

// returns Promise.resolve(token|null) if they are logged in or not
members.getToken();

// returns Promise.resolve(true|false) on whether it worked or not
members.logout();

// returns Promise.resolve(true|false) on whether it worked or not
members.login();

thoughts?

[allouis]

@rishabhgrg @JohnONolan what you think of this?

[rishabhgrg]

I think we need this too right?

// returns Promise.resolve(true|false) on whether it worked or not
members.startSession();

[allouis]

Yeah good point @rishabhgrg updated - wdyt?