feat(): add Bookinfo demo deployment to enterprise demo flow

[PulkitDadwal]

Description

This PR adds support for deploying the Bookinfo demo application as part of the enterprise demo (entDemo()) flow. When the enterprise demo is set up, a minimal Bookinfo application is automatically deployed to the first worker cluster, providing users with a more realistic microservices example in addition to the existing iPerf demo.
No new files were created; all logic and manifests are included in existing files.

Fixes #76

How Has This Been Tested?

• Ran the enterprise demo flow and verified that the Bookinfo application was deployed to the first worker cluster.
• Confirmed that the Bookinfo productpage service is running in the bookinfo namespace and accessible on port 9080.
• Verified that the user receives a message after deployment with instructions to access the service.

test-cases

• Bookinfo manifest is created and applied during entDemo()
• Bookinfo productpage service is running in the correct namespace
• User receives deployment confirmation message

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit test cases.

Does this PR introduce a breaking change?