* Add shim dll to redirect to appropriate runtime
* Build updates for creating global tool package
* Add building global tool to nuget.yml
* Add azure upload of nuget packages
Add the functionality to build a framework dependent (shared framework) package for PowerShell.
The changes create two packages, one for Windows and other for Linux, due to #if code.
Based on standard practices, we need to have a copyright and license notice at the top of each source file. Removed existing copyrights and updated/added copyright notices for .h, .cpp, .cs, .ps1, and .psm1 files.
Updated module manifests for consistency to have Author = "PowerShell" and Company = "Microsoft Corporation". Removed multiple line breaks.
Separate PR coming to update contribution document for new source files: #6140
Manually reviewed each change.
Fix#6073
* add template xml for package signing
* Add script to generate package signing XML
* remove uploading artifact, it always fails.
* Allow the XML to be updated to be specified
