Consider adding an ESLint rule for _.chain

[theblang]

I think it would be super helpful to have an ESLint rule that checks for _.chain usage. It breaks the mold of the other methods / rules in that it has no direct translation to ES2015, it just goes away; so I can see why it doesn't exist. But it'd still be nice to see where in code it is being used via ESLint, especially since it appears to break tree-shaking with lodash.

[stevemao]

PR welcome