feat(integrations): setup integrations service structure

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

services/integrations/app/config.py

@@ -0,0 +1,22 @@
+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+class Settings(BaseSettings):
+    # Odoo Connection
+    ODOO_URL: str = ""
+    ODOO_DB: str = ""
+    ODOO_USER: str = ""
+    ODOO_API_KEY: str = ""
+
+    # Internal Services
+    API_GATEWAY_URL: str = "http://localhost:8000"
+    FLOW_ENGINE_URL: str = "http://localhost:8001"
+
+    class Config:
+        env_file = ".env"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()