fix: rename llama_stack_api dir (#4155)

# What does this PR do?

the directory structure was src/llama-stack-api/llama_stack_api

instead it should just be src/llama_stack_api to match the other
packages.

update the structure and pyproject/linting config

---------

Signed-off-by: Charlie Doern <cdoern@redhat.com>
Co-authored-by: Ashwin Bharambe <ashwin.bharambe@gmail.com>

src/llama-stack-api/llama_stack_api/schema_utils.py

@@ -1,118 +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.
-
-from collections.abc import Callable
-from dataclasses import dataclass
-from typing import Any, TypeVar
-
-from .strong_typing.schema import json_schema_type, register_schema  # noqa: F401
-
-
-class ExtraBodyField[T]:
-    """
-    Marker annotation for parameters that arrive via extra_body in the client SDK.
-
-    These parameters:
-    - Will NOT appear in the generated client SDK method signature
-    - WILL be documented in OpenAPI spec under x-llama-stack-extra-body-params
-    - MUST be passed via the extra_body parameter in client SDK calls
-    - WILL be available in server-side method signature with proper typing
-
-    Example:
-        ```python
-        async def create_openai_response(
-            self,
-            input: str,
-            model: str,
-            shields: Annotated[
-                list[str] | None, ExtraBodyField("List of shields to apply")
-            ] = None,
-        ) -> ResponseObject:
-            # shields is available here with proper typing
-            if shields:
-                print(f"Using shields: {shields}")
-        ```
-
-        Client usage:
-        ```python
-        client.responses.create(
-            input="hello", model="llama-3", extra_body={"shields": ["shield-1"]}
-        )
-        ```
-    """
-
-    def __init__(self, description: str | None = None):
-        self.description = description
-
-
-@dataclass
-class WebMethod:
-    level: str | None = None
-    route: str | None = None
-    public: bool = False
-    request_examples: list[Any] | None = None
-    response_examples: list[Any] | None = None
-    method: str | None = None
-    raw_bytes_request_body: bool | None = False
-    # A descriptive name of the corresponding span created by tracing
-    descriptive_name: str | None = None
-    required_scope: str | None = None
-    deprecated: bool | None = False
-    require_authentication: bool | None = True
-
-
-CallableT = TypeVar("CallableT", bound=Callable[..., Any])
-
-
-def webmethod(
-    route: str | None = None,
-    method: str | None = None,
-    level: str | None = None,
-    public: bool | None = False,
-    request_examples: list[Any] | None = None,
-    response_examples: list[Any] | None = None,
-    raw_bytes_request_body: bool | None = False,
-    descriptive_name: str | None = None,
-    required_scope: str | None = None,
-    deprecated: bool | None = False,
-    require_authentication: bool | None = True,
-) -> Callable[[CallableT], CallableT]:
-    """
-    Decorator that supplies additional metadata to an endpoint operation function.
-
-    :param route: The URL path pattern associated with this operation which path parameters are substituted into.
-    :param public: True if the operation can be invoked without prior authentication.
-    :param request_examples: Sample requests that the operation might take. Pass a list of objects, not JSON.
-    :param response_examples: Sample responses that the operation might produce. Pass a list of objects, not JSON.
-    :param required_scope: Required scope for this endpoint (e.g., 'monitoring.viewer').
-    :param require_authentication: Whether this endpoint requires authentication (default True).
-    """
-
-    def wrap(func: CallableT) -> CallableT:
-        webmethod_obj = WebMethod(
-            route=route,
-            method=method,
-            level=level,
-            public=public or False,
-            request_examples=request_examples,
-            response_examples=response_examples,
-            raw_bytes_request_body=raw_bytes_request_body,
-            descriptive_name=descriptive_name,
-            required_scope=required_scope,
-            deprecated=deprecated,
-            require_authentication=require_authentication if require_authentication is not None else True,
-        )
-
-        # Store all webmethods in a list to support multiple decorators
-        if not hasattr(func, "__webmethods__"):
-            func.__webmethods__ = []  # type: ignore
-        func.__webmethods__.append(webmethod_obj)  # type: ignore
-
-        # Keep the last one as __webmethod__ for backwards compatibility
-        func.__webmethod__ = webmethod_obj  # type: ignore
-        return func
-
-    return wrap