fix: Resolved the PowerShell issue in codespace

[Prekshith-Microsoft]

This pull request updates the development container configuration to address a GPG key issue and enhance the container's capabilities. The main changes include switching from a prebuilt image to a custom Dockerfile, removing the Yarn repository to avoid GPG key expiration problems, and adding PowerShell support.

Dev container configuration improvements:

• Switched from referencing the Python image directly in devcontainer.json to building from a custom Dockerfile, allowing for more flexible setup and customization.
• Added PowerShell as a feature in the development container to provide additional scripting capabilities.

Dependency management:

• Updated the Dockerfile to remove the Yarn repository, preventing issues caused by GPG key expiration.## Purpose

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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

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Other Information