Application Insights support for Multiple Environments, Stamps and App Versions

Introduced the ability to segregate telemetry data for different environments (Dev, Staging, Production) by using separate Application Insights resources with distinct instrumentation keys. Also introduced the concept of 'stamps' for comparing telemetry across multiple clusters or installations by adding custom tags to telemetry data. Furthermore, explained how to use application version IDs as standard telemetry attributes for version-to-version comparisons, particularly useful for A/B testing scenarios.