feat: add soap wizard foundation

docs/protocols/soap.md

@@ -118,6 +118,15 @@ Foundation routes:
 - `POST /operations/{operation_id}/descriptors/xsd`
 - `GET /operations/{operation_id}/soap/services`
 
+Current UI foundation:
+
+- protocol selection card on wizard step 1;
+- dedicated SOAP step 3 panel;
+- WSDL upload;
+- optional XSD upload;
+- backend-driven inspection of `service -> port -> operation`;
+- applying selected binding metadata into the operation draft target.
+
 ## 8. Поведение runtime
 
 При выполнении SOAP operation runtime должен: