feat: CKM - Add support for developer experience

[Yatish-Microsoft]

Purpose

This pull request introduces a new custom deployment configuration for Azure and adds packaging scripts for both Windows and POSIX environments to streamline the deployment process of the web application. The main changes are the addition of an azure_custom.yaml configuration file and two platform-specific scripts that automate packaging of backend and frontend components.

Deployment configuration:

• Added azure_custom.yaml to define environment settings, required versions, deployment parameters, service configuration, and deployment template for the Azure App Service.

Deployment automation scripts:

• Added infra/scripts/package_webapp.ps1 for Windows environments, which automates cleaning, building, and packaging backend and frontend files into a distributable format for Azure deployment.
• Added infra/scripts/package_webapp.sh for POSIX environments, providing equivalent functionality to the PowerShell script for Linux/macOS users.

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• ...

Other Information

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