Refactor code for improved readability and consistency

- Reformatted function signatures in `organization_service.py` and `task_service.py` for better alignment.
- Updated import statements across multiple files for consistency and organization.
- Enhanced test files by improving formatting and ensuring consistent use of async session factories.
- Added type hints and improved type safety in various service and test files.
- Adjusted `pyproject.toml` to include configuration for isort, mypy, and ruff for better code quality checks.
- Cleaned up unused imports and organized existing ones in several test files.

app/api/routes.py

@@ -1,14 +1,15 @@
 """Root API router that aggregates versioned routers."""
+
 from fastapi import APIRouter
 
 from app.api.v1 import (
-	activities,
-	analytics,
-	auth,
-	contacts,
-	deals,
-	organizations,
-	tasks,
+    activities,
+    analytics,
+    auth,
+    contacts,
+    deals,
+    organizations,
+    tasks,
 )
 from app.core.config import settings