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
* spelling: comments in src/Microsoft.Management.Infrastructure.CimCmdlets
* spelling: comments in src/Microsoft.PackageManagement.ArchiverProviders
* spelling: comments in src/Microsoft.PackageManagement.CoreProviders
* spelling: comments in src/Microsoft.PackageManagement.MetaProvider.PowerShell
* spelling: comments in src/Microsoft.PackageManagement.MsiProvider
* spelling: comments in src/Microsoft.PackageManagement.MsuProvider
* spelling: comments in src/Microsoft.PackageManagement.NuGetProvider
* spelling: comments in src/Microsoft.PackageManagement.PackageSourceListProvider
* spelling: comments in src/Microsoft.PackageManagement
* spelling: comments in src/Microsoft.PowerShell.Activities
* spelling: comments in src/Microsoft.PowerShell.Commands.Diagnostics
* spelling: comments in src/Microsoft.PowerShell.Commands.Management
* spelling: comments in src/Microsoft.PowerShell.Commands.Utility
* spelling: comments in src/Microsoft.PowerShell.ConsoleHost
* spelling: comments in src/Microsoft.PowerShell.Core.Activities
* spelling: comments in src/Microsoft.PowerShell.CoreCLR.AssemblyLoadContext
* spelling: comments in src/Microsoft.PowerShell.CoreCLR.Eventing
* spelling: comments in src/Microsoft.PowerShell.Diagnostics.Activities
* spelling: comments in src/Microsoft.PowerShell.GraphicalHost
* spelling: comments in src/Microsoft.PowerShell.LocalAccounts
* spelling: comments in src/Microsoft.PowerShell.Management.Activities
* spelling: comments in src/Microsoft.PowerShell.PSReadLine
* spelling: comments in src/Microsoft.PowerShell.PackageManagement
* spelling: comments in src/Microsoft.PowerShell.ScheduledJob
* spelling: comments in src/Microsoft.PowerShell.Security.Activities
* spelling: comments in src/Microsoft.PowerShell.Security
* spelling: comments in src/Microsoft.PowerShell.Utility.Activities
* spelling: comments in src/Microsoft.PowerShell.Workflow.ServiceCore
* spelling: comments in src/Microsoft.WSMan.Management.Activities
* spelling: comments in src/Modules
* spelling: comments in src/Schemas
* spelling: comments in src/libpsl-native
* spelling: comments in src/powershell-native
* spelling: comments in build.psm1
* spelling: comments in src/System.Management.Automation/CoreCLR
* spelling: comments in src/System.Management.Automation/DscSupport
* spelling: comments in src/System.Management.Automation/cimSupport
* spelling: comments in src/System.Management.Automation/commands
* spelling: comments in src/System.Management.Automation/engine/Modules
