Trusted Launch Initiative added

[Springstone]

Overview/Summary

This pull request primarily introduces the "Trusted Launch" policy to the project. The "Trusted Launch" policy improves the security of a Virtual Machine and requires VM SKU, OS Disk & OS Image to support it. The changes made in the pull request are related to the documentation, policy assignment, and deployment of the new policy.

Policy Documentation:

• docs/wiki/ALZ-Policies.md: Updated the count of Policy Definition Sets from 11 to 12. Added a new policy definition set named Audit-TrustedLaunch to the list of specific Custom and Built-in policy definitions. [1] [2]

Policy Assignment:

• eslzArm/eslzArm.json: Added trustedLaunchPolicyInitiative to the list of policy assignments. Added trustedLaunchDeploymentName to the list of deployment names. Added a new section for assigning the Trusted Launch policy initiative to the intermediate root management group. [1] [2] [3]

Policy Definition:

• eslzArm/managementGroupTemplates/policyAssignments/AUDIT-TrustedLaunchPolicyAssignment.json: Added a new JSON file for the Trusted Launch policy assignment.
• src/resources/Microsoft.Authorization/policySetDefinitions/Audit-TrustedLaunch.json: Added a new JSON file for the Trusted Launch policy definition.
• src/templates/policies.bicep: Added the Trusted Launch policy definition to the list of policy set definitions.

This PR fixes/adds/changes/removes

1. Add new initiative and assignment of built-in policies

Breaking Changes

1. N/A

Testing Evidence

Please provide any testing evidence to show that your Pull Request works/fixes as described and planned (include screenshots, if appropriate).

Testing URLs

Azure Public

As part of this Pull Request I have

• [X] Checked for duplicate Pull Requests
• [X] Associated it with relevant issues, for tracking and closure.
• [X] Ensured my code/branch is up-to-date with the latest changes in the main branch
• [X] Performed testing and provided evidence.
• [X] Ensured contribution guidance is followed.
• [X] Updated relevant and associated documentation.
• [X] Updated the "What's New?" wiki page (located: /docs/wiki/whats-new.md)