[Synapse] Add Support for SqlPoolsV3 and SqlDatabases

[idear1203]

Description

This change introduces a version parameter for Sql Pools to allow customers to provision the latest version of SqlPools. It also introduces the SqlDatabase resource and allows basic CRUD operations for it. Sql Pools make up the compute and can be scaled, connected to, and used to issue queries. The queries operate on the data contained in the SqlDatabase. SqlPools can be used to query different Sql Databases within the same Synapse workspace.

Design review link: https://github.com/Azure/azure-powershell-cmdlet-review-pr/issues/673

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
  • the markdown help files have been regenerated using the commands listed here

[adxsdkps]

Can one of the admins verify this patch?

[idear1203]

Please DO NOT merge this PR. Currently we are using a self-built SDK, we will switch to a official bit that will be available next week. Other than this issue, the PR is ready for a review.

[isra-fel]

Looks great. Just need to replace the SDK

[idear1203]

@isra-fel I switched to the official SDK package. Could you please take a look again?

[isra-fel]

/azp run azure-powershell - powershell-core

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