feat(blob serve): stream option implemented to prevent videos downloading

[serhii-chernenko]

It solves issue: #444

I didn't work with videos streaming enough. Maybe you have a better solution instead of this part:

const referrer = getHeader(event, 'referer')
const range = getHeader(event, 'range')

if (!referrer || !range) {
  throw createError({
    statusCode: 403,
    message: 'Unauthorized'
  })
}

But in general, I expect something like this and the code parts mentioned in the PR's files changes what has to be done.