Add built-in ELF viewer plugin

Support for binary ELF, UImage, Mach-O files

QuickLook.Plugin/QuickLook.Plugin.PEViewer/FluentBorder.cs

@@ -1,4 +1,21 @@
-using System.Windows;
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;