(#58) Implement requirement rule CPMR0074

[AdmiringWorm]

Description Of Changes

This introduces the latest requirement rule that was added in Package
Validator related to verifying that hook packages has not been used as a dependency.

Motivation and Context

We want to have the rules implemented in Package Validator implemented in the community extension.

Testing

1. Create a new package nuspec using choco new.
2. Update the dependencies list to include a dependency on a package ending with .hook.
3. Run choco pack against the nuspec.
4. Verify the rule CPMR0074 is flagged.

Operating Systems Testing

• Windows 10

Change Types Made

• Bug fix (non-breaking change).
• Feature / Enhancement (non-breaking change).
• Breaking change (fix or feature that could cause existing functionality to change).
• Documentation changes.
• PowerShell code changes.

Change Checklist

• Requires a change to the documentation.
• Documentation has been updated.
• Tests to cover my changes, have been added.
• All new and existing tests passed?
• PowerShell code changes: PowerShell v3 compatibility checked?

Related Issue

Fixes #58

[gep13]

LGTM!