Add missing license

Author: sbalint98

src/blas/backends/cublas/cublas_scope_handle_hipsycl.cpp

@@ -1,3 +1,21 @@
+/***************************************************************************
+*  Copyright (C) Codeplay Software Limited
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  For your convenience, a copy of the License has been included in this
+*  repository.
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*
+**************************************************************************/
 #include "cublas_scope_handle_hipsycl.hpp"
 #include "cublas_handle.hpp"