Support keys backed by Azure Key Vault about get-azure-app-configuration-action

[micklaw]

- name: Get all KeyVault secret values from env variables
      run: | 
        Get-ChildItem -Path Env: | ForEach-Object -Process {
          $keyName = $_.Name
          if ($_.Value -ne $null -And $_.Value -ne "" -And (Test-Json $_.Value -ErrorAction Ignore)) {
            $json = ($_.Value | ConvertFrom-Json)
            if ($json.uri -ne $null) {
              Write-Host "$keyName is keyvault json" -ForegroundColor Yellow
              $uri = $json.uri -replace "https://", ""
              $vault = $uri.Split(".")[0]
              $name = $uri.Split("/")[2]
              $secret = az keyvault secret show --vault-name $vault --name $name
              $secretJson = ($secret | ConvertFrom-Json)
              if ($secretJson.value -ne $null) {
                Write-Output "$($keyName)=$($secretJson.value)" >> $env:GITHUB_ENV
                Write-Host "$keyName secret found" -ForegroundColor DarkGreen
              }
            }
          }
        }
      shell: pwsh

This should do the job to parse the env variables which have the KeyVault JSON in them 👍🏼

[flcdrg]

Or maybe these just get passed through to a separate action to be evaluated