### Description of the new feature The `Get-AzDeployment` cmdlet has no filtering capabilities: * <https://learn.microsoft.com/en-us/powershell/module/az.resources/get-azdeploymen> But the API it uses does: * <https://learn.microsoft.com/en-us/rest/api/resources/deployments/list-at-subscription-scope> Please expose `$filter` as a parameter to `Get-AzDeployment` too. ### Proposed implementation details (optional) _No response_