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 dependency nuget packaging instructions for PowerShell.Core.Instrumentation ETW resource binary.
* Fix markdown MD031 Fenced code blocks errors.
* Fix MD022 Headers should be surrounded by blank lines
* Add a note about Authenticode Dual-signing requirement.
* PR Feedback.
* Set version to Beta.10
- Build PowerShell.Core.Instrumentation.dll - Resource-only binary for the ETW resources.
- Create a registration script for registering/unregistering the ETW provider.
