feat: Add unified LiteLLM API management with dashboard UI and CLI integration

- Create ccw-litellm Python package with AbstractEmbedder and AbstractLLMClient interfaces
- Add BaseEmbedder abstraction and factory pattern to codex-lens for pluggable backends
- Implement API Settings dashboard page for provider credentials and custom endpoints
- Add REST API routes for CRUD operations on providers and endpoints
- Extend CLI with --model parameter for custom endpoint routing
- Integrate existing context-cache for @pattern file resolution
- Add provider model registry with predefined models per provider type
- Include i18n translations (en/zh) for all new UI elements

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ccw-litellm/src/ccw_litellm/config/__init__.py

@@ -0,0 +1,22 @@
+"""Configuration management for LiteLLM integration."""
+
+from __future__ import annotations
+
+from .loader import get_config, load_config, reset_config
+from .models import (
+    EmbeddingModelConfig,
+    LiteLLMConfig,
+    LLMModelConfig,
+    ProviderConfig,
+)
+
+__all__ = [
+    "LiteLLMConfig",
+    "ProviderConfig",
+    "LLMModelConfig",
+    "EmbeddingModelConfig",
+    "load_config",
+    "get_config",
+    "reset_config",
+]
+