New-DbaAvailabilityGroup: Add support for contained availability groups

[DorBreger]

Type of Change

• Bug fix (non-breaking change, fixes # )
• New feature (non-breaking change, adds functionality, fixes Create contained availability group #8713 )
• Breaking change (affects multiple commands or functionality, fixes # )
• Ran manual Pester test and has passed (.\tests\manual.pester.ps1)
• Adding code coverage to existing functionality
• Pester test is included
• If new file reference added for test, has is been added to github.com/dataplat/appveyor-lab ?
• Unit test is included
• Documentation
• Build system

Purpose

Support for sql server 2022 availability groups

Approach

Commands to test

Screenshots

Learning

[andreasjordan]

Failed test is:

Describe : dbatools style
Context  : BOM
Name     : It New-DbaAvailabilityGroup.ps1 has no BOM in it
Result   : Failed
Message  : Expected strings to be the same, but they were different.
           Expected length: 4
           Actual length:   7
           Strings differ at index 4.
           Expected: 'utf8'
           But was:  'utf8bom'
           ---------------^
Describe : dbatools style
Context  : formatting
Name     : It New-DbaAvailabilityGroup.ps1 is not compliant with the OTBS formatting style. Please run Invoke-DbatoolsFormatter against the failing file and commit the changes.
Result   : Failed
Message  : Expected 0, but got 1.

@potatoqualitee - please fix this before merging.

[andreasjordan]

Looks good now.

[andreasjordan]

Please close #9345 if this PR is merged.

[potatoqualitee]

Fantastic, all tests pass 🚀 Thanks to everyone!