Migrate from Sentry.io to Rollbar monitoring solution

[tom2drum]

Description and Related Issue(s)

Resolves #2402

Proposed Changes

Added NEXT_PUBLIC_ROLLBAR_CLIENT_TOKEN for enabling Rollbar integration. NEXT_PUBLIC_SENTRY_DSN, SENTRY_CSP_REPORT_URI, NEXT_PUBLIC_SENTRY_ENABLE_TRACING are marked as deprecated.

Checklist for PR author

• I have tested these changes locally.
• I added tests to cover any new functionality, following this guide
• Whenever I fix a bug, I include a regression test to ensure that the bug does not reappear silently.
• If I have added, changed, renamed, or removed an environment variable
  • I updated the list of environment variables in the documentation
  • I made the necessary changes to the validator script according to the guide
  • I added "ENVs" label to this pull request

[tom2drum]

This will be addressed in the following task, provided the tool functions as needed. Currently, the documentation does not clarify whether we can upload one source map for all instances. It states that we must specify a base URL to match the stack frame location.