Nuget Packaging

[NavneetThekkumpat]

Description

Create Nuget Package for TestEngine

Checklist

• [x] I have performed end-to-end test locally.
• [x] New and existing unit tests pass locally with my changes
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [x] I used clear names for everything
• [x] I have performed a self-review of my own code

[github-actions[bot]]

Package	Line Rate	Branch Rate	Complexity	Health
Microsoft.PowerApps.TestEngine	91%	89%	801	✔
Summary	91% (2124 / 2333)	89% (487 / 550)	801	✔

Minimum allowed line rate is 50%