fix: Add Apache license headers to properties files

- Add proper Apache license headers to messages.properties and messages_de.properties
- Fixes Apache RAT license audit failure
- Resolves CI check failure for PR #5038

Author: sidshas03

fineract-provider/src/main/resources/messages.properties

@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
 # Interest Rate Chart validation messages
 validation.msg.savings.interestRateChart.slabs.overlap=There is an overlap between slabs {0} and {1}.
 validation.msg.savings.interestRateChart.slabs.gap=There is a gap between slabs {0} and {1}.

fineract-provider/src/main/resources/messages_de.properties

@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
 # Interest Rate Chart validation messages
 validation.msg.savings.interestRateChart.slabs.overlap=Es gibt eine Überlappung zwischen Segmenten {0} und {1}.
 validation.msg.savings.interestRateChart.slabs.gap=Es gibt eine Lücke zwischen Segmenten {0} und {1}.