chore: add copyright to license files (#983)

Looking at https://github.com/philvarner/stac-factory I notices that we
didn't have a copyright listed.

Author: gadomski

LICENSE-APACHE

@@ -174,3 +174,17 @@ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
    of your accepting any such warranty or additional liability.
 
 END OF TERMS AND CONDITIONS
+
+Copyright (c) 2021-2026 Pete Gadomski <pete.gadomski@gmail.com>
+
+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.

LICENSE-MIT

@@ -1,3 +1,5 @@
+Copyright (c) 2021-2026 Pete Gadomski <pete.gadomski@gmail.com>
+
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated
 documentation files (the "Software"), to deal in the