Add support for Sentry

[harigopal]

This adds support for Sentry, and makes Rollbar initialization optional.

Remaining to-dos

• Get client-side tracking working with CaptureConsole

Merge Checklist

• Update developer and product docs, where applicable.

Inapplicable checklist items

• Add specs that demonstrate bug / test a new feature.
• Check if route, query, or mutation authorization looks correct.
• Ensure that UI text is kept in I18n files.
• Prep screenshot or demo video for changelog entry, and attach it to issue.
• Check if new tables or columns that have been added need to be handled in the following services:
• Check if changes in packaged components have been published to npm.
• Add development seeds for new tables.
• If the updates involve Graph mutations ensure that the files are migrated to the new approach without a mutator.
• If the updates involve adding a new table ensure that rate limiting is added and documented in the docs/developers/rate_limiting.md file.

[cloudflare-pages]

Deploying docs-pupilfirst-com with    Cloudflare Pages

Latest commit:	b044c8e
Status:	✅  Deploy successful!
Preview URL:	https://5fcdcb84.pupilfirst-docs.pages.dev
Branch Preview URL:	https://add-sentry.pupilfirst-docs.pages.dev

View logs