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/safety.py

@@ -1,134 +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 enum import Enum
-from typing import Any, Protocol, runtime_checkable
-
-from pydantic import BaseModel, Field
-
-from llama_stack_api.common.tracing import telemetry_traceable
-from llama_stack_api.inference import OpenAIMessageParam
-from llama_stack_api.schema_utils import json_schema_type, webmethod
-from llama_stack_api.shields import Shield
-from llama_stack_api.version import LLAMA_STACK_API_V1
-
-
-@json_schema_type
-class ModerationObjectResults(BaseModel):
-    """A moderation object.
-    :param flagged: Whether any of the below categories are flagged.
-    :param categories: A list of the categories, and whether they are flagged or not.
-    :param category_applied_input_types: A list of the categories along with the input type(s) that the score applies to.
-    :param category_scores: A list of the categories along with their scores as predicted by model.
-    """
-
-    flagged: bool
-    categories: dict[str, bool] | None = None
-    category_applied_input_types: dict[str, list[str]] | None = None
-    category_scores: dict[str, float] | None = None
-    user_message: str | None = None
-    metadata: dict[str, Any] = Field(default_factory=dict)
-
-
-@json_schema_type
-class ModerationObject(BaseModel):
-    """A moderation object.
-    :param id: The unique identifier for the moderation request.
-    :param model: The model used to generate the moderation results.
-    :param results: A list of moderation objects
-    """
-
-    id: str
-    model: str
-    results: list[ModerationObjectResults]
-
-
-@json_schema_type
-class ViolationLevel(Enum):
-    """Severity level of a safety violation.
-
-    :cvar INFO: Informational level violation that does not require action
-    :cvar WARN: Warning level violation that suggests caution but allows continuation
-    :cvar ERROR: Error level violation that requires blocking or intervention
-    """
-
-    INFO = "info"
-    WARN = "warn"
-    ERROR = "error"
-
-
-@json_schema_type
-class SafetyViolation(BaseModel):
-    """Details of a safety violation detected by content moderation.
-
-    :param violation_level: Severity level of the violation
-    :param user_message: (Optional) Message to convey to the user about the violation
-    :param metadata: Additional metadata including specific violation codes for debugging and telemetry
-    """
-
-    violation_level: ViolationLevel
-
-    # what message should you convey to the user
-    user_message: str | None = None
-
-    # additional metadata (including specific violation codes) more for
-    # debugging, telemetry
-    metadata: dict[str, Any] = Field(default_factory=dict)
-
-
-@json_schema_type
-class RunShieldResponse(BaseModel):
-    """Response from running a safety shield.
-
-    :param violation: (Optional) Safety violation detected by the shield, if any
-    """
-
-    violation: SafetyViolation | None = None
-
-
-class ShieldStore(Protocol):
-    async def get_shield(self, identifier: str) -> Shield: ...
-
-
-@runtime_checkable
-@telemetry_traceable
-class Safety(Protocol):
-    """Safety
-
-    OpenAI-compatible Moderations API.
-    """
-
-    shield_store: ShieldStore
-
-    @webmethod(route="/safety/run-shield", method="POST", level=LLAMA_STACK_API_V1)
-    async def run_shield(
-        self,
-        shield_id: str,
-        messages: list[OpenAIMessageParam],
-        params: dict[str, Any],
-    ) -> RunShieldResponse:
-        """Run shield.
-
-        Run a shield.
-
-        :param shield_id: The identifier of the shield to run.
-        :param messages: The messages to run the shield on.
-        :param params: The parameters of the shield.
-        :returns: A RunShieldResponse.
-        """
-        ...
-
-    @webmethod(route="/moderations", method="POST", level=LLAMA_STACK_API_V1)
-    async def run_moderation(self, input: str | list[str], model: str | None = None) -> ModerationObject:
-        """Create moderation.
-
-        Classifies if text and/or image inputs are potentially harmful.
-        :param input: Input (or inputs) to classify.
-        Can be a single string, an array of strings, or an array of multi-modal input objects similar to other models.
-        :param model: (Optional) The content moderation model you would like to use.
-        :returns: A moderation object.
-        """
-        ...