Move Kubernetes and Prometheus integration to Settings -> Operations

Problem to solve

Make "operations" (Sentry, Kubernetes, Prometheus, etc) integrations all configurable from the same place.

Intended users

Developer

Further details

Make it easier to find operation integration settings and configuration.

Proposal

Move the Kubernetes and Prometheus integration settings from "Settings -> Integrations" to ""Settings -> Operations".

The "Operations" menu contains Metrics, Environments, Error Tracking, Serverless and Kubernetes. If I go to "Settings -> Operations", I assume that I could configure all of these services, but I can only configure "Error Tracking"

Permissions and Security

N/A

Documentation

Update documentation with the integrations mentioned.

Testing

Not sure

What does success look like, and how can we measure that?

Moved menu items.

Links / references