chore: Add copyright and license to generate_models.sh (#45)

* Add copyright and license to generate_models.sh

Add copyright notice and licensing information to the script.

* Update generate_models.sh

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* Fix formatting issues in generate_models.sh

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: damaz91

generate_models.sh

@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2026 UCP Authors
+#
+# 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.
+
 # Generate Pydantic models from UCP JSON Schemas
 
 # Ensure we are in the script's directory