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
- Include a serialized version of PSOptions in an includesymbols zip
- Add a function which will create a zip package from the expanded includesymbols zip and a folder of signed files
- Add a function to restore an includesymbols zip as a build and populated PSOptions with the options
