Migrate ElasticSan from generation to main

[azure-powershell-bot]

Description

Migrate ElasticSan from generation to main

Checklist

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD select appropriate branch. Cmdlets from Autorest.PowerShell should go to generation branch.
• SHOULD make the title of PR clear and informative, and in the present imperative tense.
• SHOULD update ChangeLog.md file(s) appropriately
  • 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 in the past tense. Add changelog in description section if PR goes into generation branch.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD have approved design review for the changes in this repository (Microsoft internal only) with following situations
  • Create new module from scratch
  • Create new resource types which are not easy to conform to Azure PowerShell Design Guidelines
  • Create new resource type which name doesn't use module name as prefix
  • Have design question before implementation
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT introduce breaking changes in Az minor release except preview version.
• SHOULD NOT adjust version of module manually in pull request

[azure-client-tools-bot-prd]

️✔️Az.Accounts

️✔️Build

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

⚠️Az.ElasticSan

️✔️Build

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

️✔️Breaking Change Check

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

️✔️Signature Check

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

️✔️Help File Existence Check

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

⚠️File Change Check

⚠️PowerShell Core - Windows

Type	Cmdlet	Description	Remediation
⚠️		It is required to update ChangeLog.md if you want to release a new version for Az.ElasticSan.	Add a changelog record under Upcoming Release section with past tense.

⚠️Windows PowerShell - Windows

Type	Cmdlet	Description	Remediation
⚠️		It is required to update ChangeLog.md if you want to release a new version for Az.ElasticSan.	Add a changelog record under Upcoming Release section with past tense.

️✔️UX Metadata Check

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows

️✔️Test

️✔️PowerShell Core - Linux

️✔️PowerShell Core - MacOS

️✔️PowerShell Core - Windows

️✔️Windows PowerShell - Windows