add missing endpoints

kontor-api/src/apis/version1/tysc/vendor.py

@@ -0,0 +1,22 @@
+from typing import List
+
+from fastapi import APIRouter
+
+from src.db.models.tysc import Vendor
+from src.db.session import SessionDep
+from src.schema.tysc.vendor import VendorResponse, to_response
+
+
+router = APIRouter()
+
+@router.get("/vendors")
+def get_all_vendors(db: SessionDep) -> List[VendorResponse]:
+    """
+    retrieve all vendors as json response.
+    """
+    results: list[VendorResponse] = []
+    vendors = db.query(Vendor).all()
+    for vendor in vendors:
+        response = to_response(vendor)
+        results.append(response)
+    return results