Codemod from llama_toolchain -> llama_stack

- added providers/registry
- cleaned up api/ subdirectories and moved impls away
- restructured api/api.py
- from llama_stack.apis.<api> import foo should work now
- update imports to do llama_stack.apis.<api>
- update many other imports
- added __init__, fixed some registry imports
- updated registry imports
- create_agentic_system -> create_agent
- AgenticSystem -> Agent

llama_stack/configs/distributions/conda/local-conda-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: meta-reference
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: conda

llama_stack/configs/distributions/conda/local-fireworks-conda-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: remote::fireworks
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: conda

llama_stack/configs/distributions/conda/local-ollama-conda-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: remote::ollama
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: conda

llama_stack/configs/distributions/conda/local-tgi-conda-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: remote::tgi
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: conda

llama_stack/configs/distributions/conda/local-together-conda-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: remote::together
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: conda

llama_stack/configs/distributions/docker/local-docker-example-build.yaml

@@ -5,6 +5,6 @@ distribution_spec:
     inference: meta-reference
     memory: meta-reference-faiss
     safety: meta-reference
-    agentic_system: meta-reference
+    agents: meta-reference
     telemetry: console
 image_type: docker