chore: scaffold buddhagpt, verify Qwen2.5-7B-4bit runs on M5 (PAI-87)

src/buddhagpt/__init__.py

@@ -0,0 +1,7 @@
+"""BuddhaGPT: Fine-tune and RAG experiment with Buddhist texts."""
+
+__version__ = "0.1.0"
+
+
+def main() -> None:
+    print("Hello from buddhagpt!")