add giskard tool

[Zen1th53]

Summary

This PR adds Giskard OSS v3 to the BlackArch repository.

About Giskard

Giskard is an open-source security testing framework for AI and Large Language Model (LLM) applications. It helps security researchers and developers identify vulnerabilities such as prompt injection, jailbreaks, harmful outputs, data leakage, and other risks in AI systems. It also provides automated security checks, evaluation suites, and vulnerability scanning for LLM-powered applications.

Project: https://github.com/Giskard-AI/giskard-oss

Packaging

• Packages the latest Giskard OSS v3 from the official upstream repository.
• Installs the application in an isolated Python virtual environment under /opt/giskard.
• Exposes only:
  • giskard-python
  • giskard-info
• Prevents conflicts with system Python executables.

Testing

Successfully verified:

• Builds with makepkg
• Installs and removes correctly
• giskard-info reports all bundled components
• Functional runtime tests passed (4/4 scenarios)
• No executable conflicts under /usr/bin

[Zen1th53]