add copyright information to jar (#2732)

COPYRIGHT

@@ -0,0 +1,17 @@
+____  ______________  ________________________  __________
+\   \/   /      \   \/   /   __/   /      \   \/   /      \
+ \______/___/\___\______/___/_____/___/\___\______/___/\___\
+
+Copyright 2023 Vavr, https://vavr.io
+
+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.

build.gradle

@@ -110,6 +110,10 @@ tasks.named('check') {
 }
 
 tasks.named('jar') {
+    from('.') {
+        include 'COPYRIGHT'
+    }
+
     manifest {
         attributes('Automatic-Module-Name': 'io.vavr')
     }