fix(sdk): allow CLI to check React version without installing and allow continuing setup if React is missing (#48491)

* check sdk version via package.json and allow continuing setup

* make package version checks more flexible

* add setup commands

* fix settings definition

* update environment variables for cli

* handle instances not being ready

* update error messages

* add more specific loading messages

* loading spinner state

* improve error message

* use a fixed demo setup token

* remove extraneous spinner

* update status checks

* update container messages

* update wait timing

* create api keys

* extract constants

* remove manual steps

* Add anonymous tracking + other things. will need to clean up

* Modify SDK for better structure

* remove line from print.ts

* Update webpack.embedding-sdk-cli.config.js back to production

* Add types and add quick note

* Fix a typo

* Add index file, simplify types, use an array

* Add safer json parsing

* use delay of 100ms between each setup call

* Suggestions from review

* ensure that cli works

* Attempt to fix jest errors

* Remove node-fetch from sdk code to hopefully get unit tests working again

* fix yarn.lock file

* revert capture groups change

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Co-authored-by: Oisin Coveney <oisin@metabase.com>