Break deprecated tasks DownloadPackageV0, NuGetInstallerV0, NuGetRestoreV1

[amp-powell]

Task name: DownloadPackageV0, NuGetInstallerV0, NuGetRestoreV1

Description: Breaking tests after they complete to make it clear that they are deprecated

Documentation changes required: (Y/N) Y

Added unit tests: (Y/N) Y

Attached related issue: (Y/N) Y - User stories 1662927 and 2075334

Checklist:

• Task version was bumped - please check instruction how to do it
• Checked that applied changes work as expected

[magleaso]

Error messages should be more direct, should use loc strings whenever possible, and consider whether throwing at the end of the execution of the task is the best way

Made strings clearer, using loc strings, and had a meeting about breaking at the end vs. beginning