added license in ci.yml

Signed-off-by: Dariksha <img_2021021@iiitm.ac.in>

Author: DarikshaAnsari

.github/workflows/ci.yml

@@ -1,3 +1,16 @@
+# Copyright 2024 The Archivista Contributors
+#
+# 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
+#
+# 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.
 name: CI
 
 on: [push, pull_request]