For release.

…6024)

CP of #6022 

## Change
Use an `IReference<Boolean>` rather than a custom enum to represent an
optional bool value. The projection is much cleaner and scales better to
other value types.

Cherry-pick of #6023
###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/winget-cli/pull/6025)

## Change
Adds some additional validation for MSI switches and Windows Feature
names:

1. MSI switches are checked during full manifest validation in the same
way that they are checked when we attempt to use the MSI APIs rather
than msiexec. The API is used for fully all silent installs of MSIs, so
we now ensure that those will work (6 total manifests in winget-pkgs
were found that needed fixes).
2. Windows Feature names in dependencies are validated to be {
alphanumeric, `-`, `_` }. This is done both during full manifest
validation and at runtime.

A PowerShell script
(tools/ManifestValidation/Invoke-ManifestValidation.ps1) is added that
will run `wingetdev validate` against a directory recursively and
generate a report. There is support for resuming in the middle of the
run. This would probably perform much better if it were updated to use
the WinGetUtil API, but that can be a future project.

CP #6222 to 1.28

Updates our `ExportAll` test to use `_` instead of `.` in the name of
the subdirectory resource as DSC 3.2 is now strict about this.

Improves our DSC resource filtering mechanism to target some well-known
resources and then exclude all resources that reside in that same
location. This will prevent new DSC provided resources from being
included by default.

#6237)