GT AI OS Community v2.0.33 - Add NVIDIA NIM and Nemotron agents

- Updated python_coding_microproject.csv to use NVIDIA NIM Kimi K2
- Updated kali_linux_shell_simulator.csv to use NVIDIA NIM Kimi K2
  - Made more general-purpose (flexible targets, expanded tools)
- Added nemotron-mini-agent.csv for fast local inference via Ollama
- Added nemotron-agent.csv for advanced reasoning via Ollama
- Added wiki page: Projects for NVIDIA NIMs and Nemotron

.github/PULL_REQUEST_TEMPLATE.md

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+## ⚠️ Pull Requests Not Accepted
+
+GT AI OS Community is a **read-only distribution** of GT AI OS.
+
+**We do not accept pull requests.** This PR will be closed without review.
+
+---
+
+### How to Contribute
+
+- **Bug reports:** [Open an issue](https://github.com/GT-Edge-AI-Internal/gt-ai-os-community/issues/new?template=bug_report.md)
+- **Feature requests:** [Open an issue](https://github.com/GT-Edge-AI-Internal/gt-ai-os-community/issues/new?template=feature_request.md)
+- **Questions:** [Start a discussion](https://github.com/GT-Edge-AI-Internal/gt-ai-os-community/discussions)
+
+Thank you for your interest in GT AI OS!