chore: added missing licence header

frontend/src/views/SupplierDashboard.vue

@@ -1,3 +1,23 @@
+<!--
+ Copyright (c) 2023 Volkswagen AG
+ Copyright (c) 2023 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. (represented by Fraunhofer ISST)
+ Copyright (c) 2023 Contributors to the Eclipse Foundation
+
+ See the NOTICE file(s) distributed with this work for additional
+ information regarding copyright ownership.
+
+ This program and the accompanying materials are made available under the
+ terms of the Apache License, Version 2.0 which is available at
+ https://www.apache.org/licenses/LICENSE-2.0.
+
+ 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.
+
+ SPDX-License-Identifier: Apache-2.0
+-->
 <template>
     <main>
         <div class="text-gray-900 ">