Add PS scripts for create/add GSF package

[JenMadiedo]

Currently there are only bash scripts available under scripts/package and it limits the scope of integration for a Windows user.

Description

As a Carbon Aware application developer using Windows, I would like powershell script equivalents of the bash scripts available under scripts/package so I can run these scripts directly in my environment.

Acceptance Criteria

• Create add-packages.ps and create-packages.ps powershell scripts
• Ensure that scripts run as intended on windows machines.

Dependencies

Task List

• Write powershell scripts
• Make sure they pass

Sprint-Ready Checklist

• Acceptance criteria defined
• Acceptance criteria is verifiable / testable
• External / 3rd Party dependencies identified
• Engineering team understands acceptance criteria
• Is the user story small enough to be implemented in a short amount of time, but large enough to provide value?