PackageReferenceProcessor - Apply filtering for custom NuGet packages also on dependencies

[MichielOda]

This pull request introduces refactoring and improvements to how NuGet package assembly references are processed and handled, especially regarding dependency filtering and the creation of assembly references. The most important changes include the extraction of assembly reference logic into a dedicated method, improved handling of default-included file NuGet packages, and updates to method signatures to support these enhancements.

Refactoring and logic extraction:

• Added a new CreatePackageAssemblyReference method to encapsulate the logic for creating PackageAssemblyReference objects and determining whether a package should be installed, reducing code duplication and improving maintainability.

Dependency filtering improvements:

• Updated the filtering logic in ProcessRemainingPackagesAsync to skip development dependency packages only if they are also present in the defaultIncludedFilesNuGetPackages collection, ensuring more accurate dependency handling.

Method signature updates:

• Modified the signature of ProcessRemainingPackagesAsync to accept defaultIncludedFilesNuGetPackages as an argument, enabling improved dependency filtering and handling.
• Updated the call to ProcessRemainingPackagesAsync in ProcessPackagesAsync to pass the new argument, maintaining compatibility with the updated method signature.

Assembly reference handling:

• Changed the logic in ProcessResolvedPackagesAsync and ProcessRemainingPackagesAsync to use the new CreatePackageAssemblyReference method, ensuring consistent and centralized handling of assembly reference creation and installation decisions