Add Llama 70B 3.3 to fireworks (#654)

# What does this PR do?

- Makes Llama 70B 3.3 available for fireworks

## Test Plan

```shell
pip install -e . \
&& llama stack build --config distributions/fireworks/build.yaml --image-type conda \
&& llama stack run distributions/fireworks/run.yaml \
  --port 5000
```

```python
        response = client.inference.chat_completion(
            model_id="Llama3.3-70B-Instruct",
            messages=[
                {"role": "user", "content": "hello world"},
            ],
        )
```

## Before submitting

- [ ] This PR fixes a typo or improves the docs (you can dismiss the
other checks if that's the case).
- [x] Ran pre-commit to handle lint / formatting issues.
- [x] Read the [contributor
guideline](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md),
      Pull Request section?
- [ ] Updated relevant documentation.
- [ ] Wrote necessary unit or integration tests.

llama_stack/providers/remote/inference/fireworks/config.py

@@ -22,7 +22,7 @@ class FireworksImplConfig(BaseModel):
     )
 
     @classmethod
-    def sample_run_config(cls) -> Dict[str, Any]:
+    def sample_run_config(cls, __distro_dir__: str) -> Dict[str, Any]:
         return {
             "url": "https://api.fireworks.ai/inference/v1",
             "api_key": "${env.FIREWORKS_API_KEY}",

llama_stack/providers/remote/inference/fireworks/fireworks.py

@@ -65,6 +65,10 @@ MODEL_ALIASES = [
         "fireworks/llama-v3p2-90b-vision-instruct",
         CoreModelId.llama3_2_90b_vision_instruct.value,
     ),
+    build_model_alias(
+        "fireworks/llama-v3p3-70b-instruct",
+        CoreModelId.llama3_3_70b_instruct.value,
+    ),
     build_model_alias(
         "fireworks/llama-guard-3-8b",
         CoreModelId.llama_guard_3_8b.value,

llama_stack/providers/utils/inference/prompt_adapter.py

@@ -282,7 +282,8 @@ def chat_completion_request_to_messages(
     ):
         # llama3.1 and llama3.2 multimodal models follow the same tool prompt format
         messages = augment_messages_for_tools_llama_3_1(request)
-    elif model.model_family == ModelFamily.llama3_2:
+    elif model.model_family in (ModelFamily.llama3_2, ModelFamily.llama3_3):
+        # llama3.2 and llama3.3 models follow the same tool prompt format
         messages = augment_messages_for_tools_llama_3_2(request)
     else:
         messages = request.messages

llama_stack/templates/fireworks/run.yaml

@@ -110,6 +110,11 @@ models:
   provider_id: fireworks
   provider_model_id: fireworks/llama-v3p2-90b-vision-instruct
   model_type: llm
+- metadata: {}
+  model_id: meta-llama/Llama-3.3-70B-Instruct
+  provider_id: fireworks
+  provider_model_id: fireworks/llama-v3p3-70b-instruct
+  model_type: llm
 - metadata: {}
   model_id: meta-llama/Llama-Guard-3-8B
   provider_id: fireworks