Implement resolve_relations to the refactored code

[fcisio]

Hi, I was super happy to see the migration to hooks and bridge V2.
Makes everything way easier to manage.

I did notice one thing that was previously covered, that now isn't.

Before, we had this snippet handling the relations on input change:

window.storyblok.on(['input'], (event) => {
  if (event.story && event.story.content._uid === reactComponent.state.blok._uid) {
    let commentContent = window.storyblok.addComments(event.story.content, event.story.id)
    window.storyblok.resolveRelations(event.story, sbConfig.resolveRelations, () => {
      reactComponent.setState({ blok: commentContent })
    })
  }
})

This has not been ported while refactoring:

storyblokInstance.on(['input'], (event) => {
  // live updates when editing
  if (event.story._uid === story._uid) {
    setStory(event.story)
  }
}) 

Here are the outputs before and now:

// Before
projects: [
  { name: "First Project", ... },
  { name: "Other Project", ... }
]

// Now
projects: ["e429d7ff-9368-436e-a3ea-449e4d70361b", "ce8c728a-5787-4f24-9f6c-4dadf2b95861"]

So we need a way to catch resolve_relations & possibly resolve_links on input change.
I'm having issues implementing this on my own, and the js-client documentation doesn't mention the functions in question.

Thanks

[fcisio]

I have found the solution!

resolve_relations & resolve_links need to be passed in the bridge instance.
new StoryblokBridge({ resolve_relations: [] })

I've submitted a PR that fixes this along with other stuff #17

Basically, the sbConfig should be passed in StoryblokBridge and get('/...'). That way, the configs can be set in one place and will work everywhere.