Add support to use sharable presets for vue create

[Justineo]

What problem does this feature solve?

For reusable project boilerplates, it's useful to have a sharable preset like those under vuejs-templates for 2.x. Users have to manually install custom plugins and choose setup options ATM.

What does the proposed API look like?

Presets may provide default settings for built-in plugins and automatically install custom plugins.

So users can use something like

vue create app --preset username/my-vue-preset

to create projects based on a sharable boilerplate out-of-the-box.

For a certain preset repo, we may simply specify the used/omitted plugins and provide default options for them, and pre-configured vue.config.js.