Added site runtime preview code behind ECS Config

[ashwani123p]

Overview

This PR introduces a feature that enables launching Microsoft Edge DevTools directly within Visual Studio Code for the PreviewSite functionality within VSCode Desktop. On executing the command, the Microsoft Edge Tools extension will be triggered to provide an in-editor preview environment. Additionally, this PR implements a check for the launch.json configuration and an ECS flag to manage feature availability.

Changes Made

• launchBrowserAndDevToolsWithinVsCode in PreviewSite: Added a new command to launch the Edge DevTools project within VS Code.
• updateLaunchJsonConfig in LaunchJsonHelper: Created a helper function to modify the launch.json configuration when required by the PreviewSite launch.
• ECS Flag for Feature Toggle (enableSiteRuntimePreview): Added an ECS configuration setting to determine feature availability.
• Changes in extension.ts file are:
  • When ECS config is enabled, website details were fetched from PPAPI Service, and the site preview launched with the correct URL which matched with websiteRecordId in site repo.
  • When disabled, the command reverted to the existing portalWebView.createOrShow behavior which previewing html content.

[ashwani123p]

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