Convert Storagesync swagger to Tsp

[mcgallan]

This PR migrates your latest version (identified by the tag in your readme.md) of swagger to TypeSpec. We already tried our best to make sure the TypeSpec represents same as previous swagger. Since we lack the business knowledge, please validate this PR again to make sure it's functional equivalent as before. The local validation step is at Getting started | TypeSpec Azure

Besides, TypeSpec encourages to follow ARM guidelines. Therefore, some representations in your previous swagger will be fixed to follow these guidelines. When you see differences in your local validation, please keep this note in mind.

Please reach out to TypeSpec Discussions Channel if there is any help needed.

[openapi-pipeline-app]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ Your PR has breaking changes in the generated SDK for JavaScript (label: BreakingChange-JavaScript-Sdk). Refer to step 3 in the PR workflow diagram.
• ❌ 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 started successfully. If there is ApiView generated, it will be updated in this comment.