Add context menu for packing nuspec files

[AdmiringWorm]

Expected Behavior

Add a context menu to the explorer menu to allow users to select a directory containing nuspec files, or to select a nuspec file directory.

Current Behavior

No Context menu available.

Possible Solution

This context menu should then give the ability to run the pack command on the directory/file.

Context

Just a nice feature to have.

Your Environment

• Module version used: 0.7.0
• Operating System and PowerShell version: Win 10, PS 5.1