* Add option for only packing runtime-specific packages
* Remove Microsoft.AspNetCore.Blazor.Templates.dll from the Blazor VSIX
* Cleanup implementation of ANCMSymbols packaging
Changes:
* Remove obsolete targets which are unnecessary now that this repo no longer builds git submodules in a separate build process
* Remove the need for static analysis of 'ArtifactInfo' items
* Simplify how the code signing task is configured
* Remove unused repo tasks
* Remove duplicate lists of external dependencies and packages to be produced
* Remove obsolete build definition
* Remove obsolete build script parameters
* Add VisualStudioSetupOutputPath