docs: Update license information (#15)

* docs: Update Notice
* docs: Add license header for find-curl

Author: tomasz-blasz

NOTICE

@@ -1,4 +1,4 @@
-firebolt-cpp-transport
+firebolt-cpp-client
 
 Copyright 2025 Comcast Cable Communications Management, LLC
 

cmake/FindCurl.cmake

@@ -1,3 +1,19 @@
+# Copyright 2025 Comcast Cable Communications Management, LLC
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 # - FindCurl.cmake
 # Finds the CURL library and includes
 # This will define: