feat: initial ray-serve-apps PyPI package

Implements ADR-0024: Ray Repository Structure

- Ray Serve deployments for GPU-shared AI inference
- Published as PyPI package for dynamic code loading
- Deployments: LLM, embeddings, reranker, whisper, TTS
- CI/CD workflow publishes to Gitea PyPI on push to main

Extracted from kuberay-images repo per ADR-0024

requirements.txt

@@ -0,0 +1,24 @@
+# Ray Serve dependencies
+ray[serve]==2.53.0
+
+# LLM inference
+vllm
+
+# Embeddings and reranking
+sentence-transformers
+
+# Speech-to-text
+faster-whisper
+
+# Text-to-speech
+TTS
+
+# HTTP client
+httpx
+
+# Numerical computing
+numpy
+scipy
+
+# Optional: Intel GPU support (for danilo node)
+# intel-extension-for-pytorch