[Feature Request]: Update version prompts or call to action

[huntj88]

Describe your user scenario
Users should be aware when new versions of live share are available

Describe the solution you'd like

• if using local live share host for dev environment, console log version update details
• npm install update mesage
• npx script to update all packages related to live share

[Ryan Bliss]

This can be addressed via deprecating packages in NPM. Closing this for now, can re-open in the future if the need arises.