Add VSIX packages to VS 2017

These are the extensions to add, but we're waiting on choco to get this fixed.

#Install-ChocolateyVsixPackage ProductivityPowerPack2017 https://marketplace.visualstudio.com/items?itemName=VisualStudioProductTeam.ProductivityPowerPack2017
#Install-ChocolateyVsixPackage RefactoringEssentialsforVisualStudio2017 https://marketplace.visualstudio.com/items?itemName=SharpDevelopTeam.RefactoringEssentialsforVisualStudio2017
#Install-ChocolateyVsixPackage WebExtensionPack2017 https://marketplace.visualstudio.com/items?itemName=MadsKristensen.WebExtensionPack2017
#Install-ChocolateyVsixPackage WebPackTaskRunner https://marketplace.visualstudio.com/items?itemName=MadsKristensen.WebPackTaskRunner
#Install-ChocolateyVsixPackage AWSToolkitforVisualStudio2017 https://marketplace.visualstudio.com/items?itemName=AmazonWebServices.AWSToolkitforVisualStudio2017
#Install-ChocolateyVsixPackage MyWorkItemsforVS2017 https://marketplace.visualstudio.com/items?itemName=TheRealRafeKemmis.MyWorkItemsforVS2017