This PR fulfills the requirements of #9069 by:
- Adding a golangci-lint directive (forbidigo) to disallow all fmt.Errorf usages.
- Replacing existing fmt.Errorf instances with structured errors from github.com/SigNoz/signoz/pkg/errors for consistent error classification and lint compliance.
- Verified lint and build integrity.
## 📄 Summary
- Instead of relying on JWT for session management, we are adding another token system: opaque. This gives the benefits of expiration and revocation.
- We are now ensuring that emails are regex checked throughout the backend.
- Support has been added for OIDC protocol
* feat(access-control): embed openfga in signoz
* feat(authz): rename access control to authz
* feat(authz): fix codeowners and go mod tidy
* feat(authz): fix lint
* feat(authz): update go version and move convertor to instrumentation
* feat(authz): some more lint issues
* feat(authz): some more lint issues
* feat(authz): some more lint issues
* feat(authz): fix more lint issues
* feat(authz): make logger converter interface
