fixAddMissingMember should work for type literal

TypeScript Version: 3.2.0-dev.20181004

Code

type T = {
 x: number;
}

function f(t: T) {
 t.y;
}

Expected behavior:

Code fix to add y to the type literal.

Actual behavior:

No code fix. There is one if we use interface.
This issue should also include getting this to work for types defined in jsdoc syntax.