feat: move Files to its own process; add window server messaging (multi-format clipboard, drag and drop), undo/redo, sidebar, breadcrumbs, thumbnails, file type icons, New menu and proper text fields

scripts/install_apps.sh

@@ -46,6 +46,7 @@ APPS=(
     "paint|apps/scalable/kolourpaint.svg"
     "screenshot|apps/scalable/gnome-screenshot.svg"
     "texteditor|apps/scalable/accessories-text-editor.svg"
+    "files|apps/scalable/system-file-manager.svg"
     "mandelbrot|apps/scalable/applications-science.svg"
 )