Scripts to automate CLI packager and runner

[mocsharp]

This PR adds the automation test scripts and instructions to test Holoscan/Holohub applications:

• README with instruction on how to use and how to add new applications
• script to check pre-requisites
• script to package and run the specified application
• preconfigured applications
  • Holoscan: Hello World (Python)
  • Holoscan: Video Replayer (C++ and Python)
  • Holohub: Endoscopy Tool Tracking (C++ and Python)
  • Holohub: Object Detection Torch (C++)

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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[tbirdso]

This looks like a good addition to Holoscan CLI. Added a few comments below.

As I understand it, the new order of dependencies is:
Holoscan SDK <- Holoscan CLI <- HoloHub <- Holoscan CLI testing

[mocsharp]

This looks like a good addition to Holoscan CLI. Added a few comments below.

As I understand it, the new order of dependencies is: Holoscan SDK <- Holoscan CLI <- HoloHub <- Holoscan CLI testing

Thanks for the review @tbirdso.

There are two paths:

1. Holoscan SDK <- Holoscan CLI <- Holoscan CLI testing
2. Holoscan SDK <- Holoscan CLI <- HoloHub <- Holoscan CLI testing

[tbirdso]

LGTM

[MMelQin]

LGTM and a couple nits mentioned.