nodejs net connect* methods return a socket, not void

[josephg]

All of these methods:

    export function connect(options: { allowHalfOpen?: boolean; }, connectionListener?: Function): void;
    export function connect(port: number, host?: string, connectionListener?: Function): void;
    export function connect(path: string, connectionListener?: Function): void;
    export function createConnection(options: { allowHalfOpen?: boolean; }, connectionListener?: Function): void;
    export function createConnection(port: number, host?: string, connectionListener?: Function): void;
    export function createConnection(path: string, connectionListener?: Function): void;

should return NodeSocket instead of void.