[tests] add client-sdk pytests & delete client.py (#638)

# What does this PR do?

**Why**
- Clean up examples which we will not maintain; reduce the surface area
to the minimal showcases

**What**
- Delete `client.py` in /apis/*
- Move all scripts to unit tests
  - SDK sync in the future will just require running pytests

**Side notes**
- `bwrap` not available on Mac so code_interpreter will not work

## Test Plan

```
LLAMA_STACK_BASE_URL=http://localhost:5000 pytest -v ./tests/client-sdk
```
<img width="725" alt="image"
src="https://github.com/user-attachments/assets/36bfe537-628d-43c3-8479-dcfcfe2e4035"
/>


## Sources

Please link relevant resources if necessary.


## Before submitting

- [ ] This PR fixes a typo or improves the docs (you can dismiss the
other checks if that's the case).
- [ ] Ran pre-commit to handle lint / formatting issues.
- [ ] 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/apis/inspect/client.py

@@ -1,82 +0,0 @@
-# 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.
-
-import asyncio
-
-from typing import List
-
-import fire
-import httpx
-from termcolor import cprint
-
-from .inspect import *  # noqa: F403
-
-
-class InspectClient(Inspect):
-    def __init__(self, base_url: str):
-        self.base_url = base_url
-
-    async def initialize(self) -> None:
-        pass
-
-    async def shutdown(self) -> None:
-        pass
-
-    async def list_providers(self) -> Dict[str, ProviderInfo]:
-        async with httpx.AsyncClient() as client:
-            response = await client.get(
-                f"{self.base_url}/providers/list",
-                headers={"Content-Type": "application/json"},
-            )
-            response.raise_for_status()
-            print(response.json())
-            return {
-                k: [ProviderInfo(**vi) for vi in v] for k, v in response.json().items()
-            }
-
-    async def list_routes(self) -> Dict[str, List[RouteInfo]]:
-        async with httpx.AsyncClient() as client:
-            response = await client.get(
-                f"{self.base_url}/routes/list",
-                headers={"Content-Type": "application/json"},
-            )
-            response.raise_for_status()
-            return {
-                k: [RouteInfo(**vi) for vi in v] for k, v in response.json().items()
-            }
-
-    async def health(self) -> HealthInfo:
-        async with httpx.AsyncClient() as client:
-            response = await client.get(
-                f"{self.base_url}/health",
-                headers={"Content-Type": "application/json"},
-            )
-            response.raise_for_status()
-            j = response.json()
-            if j is None:
-                return None
-            return HealthInfo(**j)
-
-
-async def run_main(host: str, port: int):
-    client = InspectClient(f"http://{host}:{port}")
-
-    response = await client.list_providers()
-    cprint(f"list_providers response={response}", "green")
-
-    response = await client.list_routes()
-    cprint(f"list_routes response={response}", "blue")
-
-    response = await client.health()
-    cprint(f"health response={response}", "yellow")
-
-
-def main(host: str, port: int):
-    asyncio.run(run_main(host, port))
-
-
-if __name__ == "__main__":
-    fire.Fire(main)