Purpose

This pull request includes several changes to the infrastructure and configuration files to support new features and improve deployment processes. The most important changes include adding post-provision hooks, introducing a flag for role creation, updating role assignments, and adding new deployment configurations.

Infrastructure Enhancements:

• Added post-provision hooks for both Windows and POSIX environments in azure.yaml to set connection strings after provisioning. (services: in azure.yaml)
• Introduced a flag createRoleForUser in infra/main.bicep to conditionally create OpenAI roles for the current user. (param location string in infra/main.bicep)
• Updated role assignments in infra/openai/openai.module.bicep to include a conditional role assignment for users based on the new flag. (resource cognitiveServicesAccount_wXAGTFUId 'Microsoft.CognitiveServices/account in infra/openai/openai.module.bicep)

Configuration Updates:

• Changed the default value for location in infra/main.parameters.json to eastus. (infra/main.parameters.json)
• Added a new deployment configuration template for aichatapp-web in src/AIChatApp.AppHost/infra/aichatapp-web.tmpl.yaml to support managed identities and connection strings. (src/AIChatApp.AppHost/infra/aichatapp-web.tmpl.yaml)

Script Additions:

• Added a PowerShell script set-connection-string.ps1 to initialize and set user secrets for connection strings. (infra/post-script/set-connection-string.ps1)