Handle API errors

[fregante]

The errors are now handled in the cli, that code should be moved here.

I might just have to read the docs.

Here are some responses

upload existing

{
    kind: 'chromewebstore#item',
    id: 'nphhdjlnhlicpjcpanamejkfehegdclg',
    uploadState: 'FAILURE',
    itemError: [
      {
        error_code: 'PKG_INVALID_VERSION_NUMBER',
        error_detail: 'Invalid version number in manifest: 23.12.30.553. Please make sure the newly uploaded package has a larger version in file manifest.json than the published package: 23.12.30.554.'
      }
    ]
}

publish

 {
    kind: 'chromewebstore#item',
    item_id: 'nphhdjlnhlicpjcpanamejkfehegdclg',
    status: [ 'OK' ],
    statusDetail: [ 'OK.' ]
  }

{
    error: {
      code: 400,
      message: 'Publish condition not met: You may not edit or publish an item that is in review.',
      errors: [
        {
          message: 'Publish condition not met: You may not edit or publish an item that is in review.',
          domain: 'chromewebstore.access',
          reason: 'badRequest'
        }
      ]
    }
}