Support Resource Manager API

Let's add support for the Resource Manager API to gcloud. I'm pretty excited about this one!

Given that Resource Manager is a lengthy term... and the concept is really just "projects"... and a project is so close to the core concept of using a gcp client library... I'm wondering if this is the first thing we should put directly onto the gcloud instance:

var gcloud = require('gcloud')(/*...*/);

gcloud.createProject('new-project-123', function(err, project) {});

gcloud.getProjects(function(err, projects) {});

var project = gcloud.project('grape-spaceship-123');

project.delete(function(err) {});
project.restore(function(err) {});

project.getMetadata(function(err, metadata) {});
project.setMetadata({/*...*/}, function(err) {});

Edit: This idea doesn't really work. We need to be able to support lazy auth info, so we have to have a nested "Projects" class of some sort.

Revised:

var gcloud = require('gcloud');
var projects = gcloud.projects(/* auth */);

projects.createProject('new-project-123', function(err, project) {});

projects.getProjects(function(err, projects) {});

var project = projects.project('grape-spaceship-123');

project.delete(function(err) {});
project.restore(function(err) {});

project.getMetadata(function(err, metadata) {});
project.setMetadata({/*...*/}, function(err) {});

Is it likely that the resource manager api will ever do more than just projects?

It looks like there are Organizations as well (https://developers.google.com/apis-explorer/?hl=en_US#p/cloudresourcemanager/v1beta1/)

Maybe it's best to just keep resources:

var gcloud = require('gcloud');
var resources = gcloud.resources({...});

resources.getProjects();
var project = resources.project('grape-spaceship-123');

I like that, projects.getProjects(...) read kinda funny to me.

Vote!

// a
var resources = gcloud.resources();
resources.getProjects();
resources.project('grape-spaceship-123');

// b
var resourceManager = gcloud.resourcemanager();
resourceManager.getProjects();
resourceManager.project('grape-spaceship-123');

// c
var resource = gcloud.resource();
resource.getProjects();
resource.project('grape-spaceship-123');

// d
??