DevTestLab : Migrate to TypeSpec API

[nandiniYeltiwar]

This PR uses the TypeSpec to OpenAPI migration tool to generate typespec code. The PR also contains API updates as they were long overdue. Our last stable release happened 7 years back .

[openapi-pipeline-app]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ This PR targets either the main branch of the public specs repo or the RPSaaSMaster branch of the private specs repo. These branches are not intended for iterative development. Therefore, you must acknowledge you understand that after this PR is merged, the APIs are considered shipped to Azure customers. Any further attempts at in-place modifications to the APIs will be subject to Azure's versioning and breaking change policies. Additionally, for control plane APIs, you must acknowledge that you are following all the best practices documented by ARM at aka.ms/armapibestpractices. If you do intend to release the APIs to your customers by merging this PR, add the PublishToCustomers label to your PR in acknowledgement of the above. Otherwise, retarget this PR onto a feature branch, i.e. with prefix release- (see aka.ms/azsdk/api-versions#release--branches).
• ❌ This PR is in purview of the ARM review (label: ARMReview). This PR must get ARMSignedOff label from an ARM reviewer.
  This PR has ARMChangesRequested label. Please address or respond to feedback from the ARM API reviewer.
  When you are ready to continue the ARM API review, please remove the ARMChangesRequested label.
  Automation should then add WaitForARMFeedback label.
  ❗If you don't have permissions to remove the label, request write access per aka.ms/azsdk/access#request-access-to-rest-api-or-sdk-repositories.
  For details of the ARM review, see aka.ms/azsdk/pr-arm-review
  
• ❌ The required check named TypeSpec Validation has failed. Refer to the check in the PR's 'Checks' tab for details on how to fix it and consult the aka.ms/ci-fix guide

[openapi-pipeline-app]

PR validation pipeline restarted successfully. If there is ApiView generated, it will be updated in this comment.

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
TypeSpec	Microsoft.DevTestLab
JavaScript	@azure/arm-devtestlabs
Java	com.azure.resourcemanager:azure-resourcemanager-devtestlabs

[jianingwang123]

Hi, it looks like the 'package-2015-05-preview' doesn’t match the tag name package-2025-06-preview mentioned above.

[nandiniYeltiwar]

Oh, thanks for pointing that out! Fixed it.

[nandiniYeltiwar]

@jianingwang123 I do not have permissions to update the labels for the PR. I would like to add the label PublishToCustomers.

[rkmanda]

  {

Have you worked with the TypeSpec team on how to fix the errors showing up in the swagger lintdiff check already? Also are these violations already shipped in a previous stable version or are these restricted to a preview version? Pl setup 45 min with me to go over the PR..

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Refers to: specification/devtestlabs/resource-manager/Microsoft.DevTestLab/preview/2025-06-05-preview/DTL.json:8 in 74ba0e1. [](commit_id = 74ba0e1, deletion_comment = False)