Add support for customized nuget globalPackagesFolder

[gmnl]

Using a nuget.config file with a custom globalPackagesFolder, the metadata of the referenced nuget packages will not be resolved.

Example for such a nuget.config file:

<?xml version="1.0" encoding="utf-8"?>
<!-- Adds the relative path Extern/NugetPackageFeed to the package sources -->
<!-- this file is merged with the user nuget settings and the settings in the .nuget dir of the solution -->
<configuration>
  <config>
    <add key="globalPackagesFolder" value="C:\SharedNugetPackages" />
  </config>
</configuration>

Proposed change: The NugetUtils class could be adapted:

• add new parameter Microsoft.Sbom.Common.Config.IConfiguration configuration to the constructor
• resolve the correct folder with customPackagePath = SettingsUtility.GetGlobalPackagesFolder(Settings.LoadDefaultSettings(this.configuration.BuildComponentPath.Value));
• use customPackagePath as a fallback solution to resolve the nuspecLocation in method NugetUtils.GetMetadataLocation