feat: separate fusion field service and LTC into standalone modules, update core modules

- fusion_claims: separated field service logic, updated controllers/views
- fusion_tasks: updated task views and map integration
- fusion_authorizer_portal: added page 11 signing, schedule booking, migrations
- fusion_shipping: new standalone shipping module (Canada Post, FedEx, DHL, Purolator)
- fusion_ltc_management: new standalone LTC management module

fusion_shipping/__init__.py

@@ -0,0 +1,3 @@
+from . import models
+from . import wizard
+from . import api