Integrate Application Insights connection string with Azure Container App

[tjementum]

Summary & Motivation

Add the Application Insights connection string as an environment variable, named APPLICATIONINSIGHTS_CONNECTION_STRING, to the Azure Container App. This is a special name that enables the Application Insights SDK to automatically recognize and use this connection string, eliminating the need for additional configuration.

Opting not to retrieve the connection string via Bicep due to a known issue (see GitHub Issue #157), which affects the --what-if functionality. Instead, the Azure CLI is used to fetch the connection string and pass it as a parameter to Bicep, ensuring the --what-if functionality remains effective.

To enhance clarity, the environmentName and environmentId parameters in the Bicep container App module have been renamed to containerAppsEnvironmentName and containerAppsEnvironmentId, respectively.

Checklist

• I have added a Label to the pull-request
• I have added tests, and done manual regression tests
• I have updated the documentation, if necessary