build: format codebase imports using ruff linter (#1028)

# What does this PR do?

- Configured ruff linter to automatically fix import sorting issues.
- Set --exit-non-zero-on-fix to ensure non-zero exit code when fixes are
applied.
- Enabled the 'I' selection to focus on import-related linting rules.
- Ran the linter, and formatted all codebase imports accordingly.
- Removed the black dep from the "dev" group since we use ruff

Signed-off-by: Sébastien Han <seb@redhat.com>

[//]: # (If resolving an issue, uncomment and update the line below)
[//]: # (Closes #[issue-number])

## Test Plan
[Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.*]

[//]: # (## Documentation)
[//]: # (- [ ] Added a Changelog entry if the change is significant)

Signed-off-by: Sébastien Han <seb@redhat.com>

llama_stack/providers/tests/inference/fixtures.py

@@ -11,13 +11,11 @@ import pytest_asyncio
 
 from llama_stack.apis.models import ModelInput, ModelType
 from llama_stack.distribution.datatypes import Api, Provider
-
 from llama_stack.providers.inline.inference.meta_reference import (
     MetaReferenceInferenceConfig,
 )
 from llama_stack.providers.inline.inference.vllm import VLLMConfig
 from llama_stack.providers.remote.inference.bedrock import BedrockConfig
-
 from llama_stack.providers.remote.inference.cerebras import CerebrasImplConfig
 from llama_stack.providers.remote.inference.fireworks import FireworksImplConfig
 from llama_stack.providers.remote.inference.groq import GroqConfig

llama_stack/providers/tests/inference/groq/test_groq_utils.py

@@ -10,11 +10,13 @@ import pytest
 from groq.types.chat.chat_completion import ChatCompletion, Choice
 from groq.types.chat.chat_completion_chunk import (
     ChatCompletionChunk,
-    Choice as StreamChoice,
     ChoiceDelta,
     ChoiceDeltaToolCall,
     ChoiceDeltaToolCallFunction,
 )
+from groq.types.chat.chat_completion_chunk import (
+    Choice as StreamChoice,
+)
 from groq.types.chat.chat_completion_message import ChatCompletionMessage
 from groq.types.chat.chat_completion_message_tool_call import (
     ChatCompletionMessageToolCall,
@@ -23,6 +25,7 @@ from groq.types.chat.chat_completion_message_tool_call import (
 from groq.types.shared.function_definition import FunctionDefinition
 from llama_models.datatypes import GreedySamplingStrategy, TopPSamplingStrategy
 from llama_models.llama3.api.datatypes import ToolParamDefinition
+
 from llama_stack.apis.common.content_types import ToolCallParseStatus
 from llama_stack.apis.inference import (
     ChatCompletionRequest,

llama_stack/providers/tests/inference/groq/test_init.py

@@ -5,11 +5,11 @@
 # the root directory of this source tree.
 
 import pytest
+
 from llama_stack.apis.inference import Inference
 from llama_stack.providers.remote.inference.groq import get_adapter_impl
 from llama_stack.providers.remote.inference.groq.config import GroqConfig
 from llama_stack.providers.remote.inference.groq.groq import GroqInferenceAdapter
-
 from llama_stack.providers.remote.inference.ollama import OllamaImplConfig
 
 

llama_stack/providers/tests/inference/test_model_registration.py

@@ -8,7 +8,6 @@ from unittest.mock import AsyncMock, patch
 
 import pytest
 
-
 # How to run this test:
 #
 # torchrun $CONDA_PREFIX/bin/pytest -v -s -k "meta_reference" --inference-model="Llama3.1-8B-Instruct"

llama_stack/providers/tests/inference/test_text_inference.py

@@ -6,7 +6,6 @@
 
 
 import pytest
-
 from llama_models.llama3.api.datatypes import (
     SamplingParams,
     StopReason,
@@ -15,7 +14,6 @@ from llama_models.llama3.api.datatypes import (
     ToolParamDefinition,
     ToolPromptFormat,
 )
-
 from pydantic import BaseModel, ValidationError
 
 from llama_stack.apis.common.content_types import ToolCallParseStatus
@@ -35,7 +33,6 @@ from llama_stack.apis.models import ListModelsResponse, Model
 
 from .utils import group_chunks
 
-
 # How to run this test:
 #
 # pytest -v -s llama_stack/providers/tests/inference/test_text_inference.py