fix(vue): Mark Vue as having no side effects. (#4217)
fix(vue): Mark Vue as having no side effects. (#4217)

The vue package has never had any side effects. We should align with the
rest of our SDKS and set the `sideEffects` field in package.json to be
false.
getsentry/raven-js,getsentry/raven-js,getsentry/raven-js,getsentry/raven-js