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Migrate VSIX launch settings configurations to CPS form
Warn for multiple blank lines in source (#65451)
Replace GeneratePkgDef with impl that does not load assemblies (#43302)
Set DeployExtension for all the extensions we expect to deploy
Fix the Compiler VSIX extension so it works with CPS projects again
Update MicrosoftVisualStudioExtensibilityTestingVersion (#78661)