chore: move all Llama Stack types from llama-models to llama-stack (#1098)

llama-models should have extremely minimal cruft. Its sole purpose
should be didactic -- show the simplest implementation of the llama
models and document the prompt formats, etc.

This PR is the complement to
https://github.com/meta-llama/llama-models/pull/279

## Test Plan

Ensure all `llama` CLI `model` sub-commands work:

```bash
llama model list
llama model download --model-id ...
llama model prompt-format -m ...
```

Ran tests:
```bash
cd tests/client-sdk
LLAMA_STACK_CONFIG=fireworks pytest -s -v inference/
LLAMA_STACK_CONFIG=fireworks pytest -s -v vector_io/
LLAMA_STACK_CONFIG=fireworks pytest -s -v agents/
```

Create a fresh venv `uv venv && source .venv/bin/activate` and run
`llama stack build --template fireworks --image-type venv` followed by
`llama stack run together --image-type venv` <-- the server runs

Also checked that the OpenAPI generator can run and there is no change
in the generated files as a result.

```bash
cd docs/openapi_generator
sh run_openapi_generator.sh
```

llama_stack/models/llama/llama3/prompt_templates/tool_response.py

@@ -0,0 +1,63 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# top-level folder for each specific model found within the models/ directory at
+# the top-level of this source tree.
+
+import textwrap
+from typing import Optional
+
+from .base import PromptTemplate, PromptTemplateGeneratorBase
+
+
+class ToolResponseGenerator(PromptTemplateGeneratorBase):
+    def gen(
+        self,
+        status: str,
+        stdout: Optional[str] = None,
+        stderr: Optional[str] = None,
+    ):
+        assert status in [
+            "success",
+            "failure",
+        ], f"status must be 'success' or 'failure'; Got: {status}"
+        template_str = textwrap.dedent(
+            """
+            {% if status == "success" %}completed{% else %}failed{% endif %}
+            {%- if stdout %}
+            [stdout]{{ stdout }}[/stdout]
+            {%- endif -%}
+            {%- if stderr %}
+            [stderr]{{ stderr }}[/stderr]
+            {%- endif -%}
+            """
+        )
+        return PromptTemplate(
+            template_str.lstrip("\n"),
+            {
+                "status": status,
+                "stdout": stdout,
+                "stderr": stderr,
+            },
+        )
+
+    def data_examples(self):
+        return [
+            # success
+            {
+                "status": "success",
+                "stdout": '{"results":["something something"]}',
+            },
+            # failure
+            {
+                "status": "failure",
+                "stderr": "brave_search encounter an error: could not communicate with api.brave.com",
+            },
+        ]