Add assertion to build that bits are built in release configuration

I expect this to fail because unfortunately the bug is that our tests
are invoked after the build, and not in release configuration, which
means they build in debug configuration and overwrite the prior built
bits, screwing everything up!

Author: andyleejordan

.vsts-ci/templates/ci-general.yml

@@ -45,6 +45,18 @@ steps:
     testResultsFiles: '**/*.trx'
   condition: succeededOrFailed()
 
+- task: PowerShell@2
+  displayName: Assert PowerShellEditorServices release configuration
+  inputs:
+    targetType: inline
+    script: |
+      $assembly = [Reflection.Assembly]::LoadFile("$(Build.SourcesDirectory)/module/PowerShellEditorServices.VSCode/bin/Microsoft.PowerShell.EditorServices.VSCode.dll")
+      if ($assembly.GetCustomAttributes([System.Diagnostics.DebuggableAttribute], $true).IsJITOptimizerDisabled) {
+        Write-Host "##vso[task.LogIssue type=error;] PowerShell Editor Services bits were not built in release configuration!"
+        exit 1
+      }
+    pwsh: ${{ parameters.pwsh }}
+
 # NOTE: We zip the artifacts because they're ~20 MB compressed, but ~300 MB raw,
 # and we have limited pipeline artifact storage space.
 - task: ArchiveFiles@2