Add missing BaseWrapperConfig class to wrapper_base

- Add BaseWrapperConfig dataclass with enabled, timeout, retry, fallback, monitoring, caching fields
- Resolves import error in tests/integration/test_pipeline_wrapper_validation.py
- Part of Issue #352 (missing wrapper exports)

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

Co-Authored-By: Claude <[email protected]>

Author: jeremymanning

src/orchestrator/core/wrapper_base.py

@@ -119,6 +119,25 @@ def fallback_result(
         )
 
 
+@dataclass
+class BaseWrapperConfig:
+    """Base configuration class for wrapper implementations."""
+    
+    # Basic configuration
+    enabled: bool = True
+    timeout_seconds: float = 30.0
+    retry_count: int = 3
+    retry_delay_seconds: float = 1.0
+    
+    # Feature flags
+    use_fallback: bool = True
+    enable_monitoring: bool = True
+    enable_caching: bool = False
+    
+    # Custom configuration
+    custom_config: Optional[Dict[str, Any]] = None
+
+
 @dataclass
 class WrapperContext:
     """