Add Copyright to nautilus extension source

Author: liturner

targets/NMBS-Nautilus/src/nmbs-nautilus.c

@@ -1,3 +1,28 @@
+/// @file nmbs-nautilus.c
+/// @brief Primary compilation unit for the NMBS-Nautilus
+///
+/// @author Luke Ian Turner
+/// @date 2026-07-19
+/// @copyright Copyright (c) 2026 Luke Ian Turner
+/// @copyright
+/// 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 Software without restriction, including without limitation the rights
+/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+/// copies of the Software, and to permit persons to whom the Software is
+/// furnished to do so, subject to the following conditions:
+/// @copyright
+/// The above copyright notice and this permission notice shall be included in all
+/// copies or substantial portions of the Software.
+/// @copyright
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+/// SOFTWARE.
+
 #include <nautilus-extension.h>
 #include <glib-object.h>
 #include <libintl.h>
@@ -10,7 +35,6 @@ struct _NmbsProperties
     GObject parent_instance;
 };
 
-
 static void nmbs_properties_column_provider_iface_init(NautilusColumnProviderInterface* iface);
 static void nmbs_properties_info_provider_iface_init(NautilusInfoProviderInterface* iface);
 static void nmbs_properties_menu_provider_iface_init(NautilusMenuProviderInterface* iface);