…dressPrefixType to remove the IPv4 or IPv6 configuration.

Description

This PR addresses addition of another parameter AddressPrefixType to the existing Remove-AzExpressRouteCircuitConnectionConfig cmdlet.

The cmdlet to have another parameter for partial removal of the config based on the address family.

If none is specified (as in legacy scenarios), the entire configuration would be removed.
This is to keep it consistent with the earlier behavior.

The design review for the same was addressed as part of
https://github.com/Azure/azure-powershell-cmdlet-review-pr/issues/601.

This is also an extension of the earlier PR : #11501, where we had introduced the Set-AzExpressRouteCircuitConnectionConfig for the resource.

Checklist

• [ x] I have read the Submitting Changes section of CONTRIBUTING.md
• [ x] 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