Added data icon to app list

Added an icon to the app list that only appears of that app has user data on the system

src/flattool-gui.gresource.xml

@@ -11,5 +11,6 @@
     <file preprocess="xml-stripblanks">folder-visiting-symbolic.svg</file>
     <file preprocess="xml-stripblanks">info-symbolic.svg</file>
     <file preprocess="xml-stripblanks">check-plain-symbolic.svg</file>
+    <file preprocess="xml-stripblanks">paper-filled-symbolic.svg</file>
   </gresource>
 </gresources>

src/paper-filled-symbolic.svg

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" height="16px" viewBox="0 0 16 16" width="16px"><path d="m 5 1 c -1.660156 0 -3 1.339844 -3 3 v 9 c 0 1.660156 1.339844 3 3 3 h 6 c 1.660156 0 3 -1.339844 3 -3 v -6 c 0 -0.90625 -0.359375 -1.773438 -1 -2.414062 l -2.585938 -2.585938 c -0.640624 -0.640625 -1.507812 -1 -2.414062 -1 z m 3 2 l 4 4 h -4 z m 0 0"/></svg>

src/window.py

@@ -508,6 +508,13 @@ class FlattoolGuiWindow(Adw.ApplicationWindow):
                 if not self.show_runtimes:
                     flatpak_row.set_visible(False)
 
+            if os.path.exists(f"{self.user_data_path}{app_id}"):
+                has_data_icon = Gtk.Image.new_from_icon_name("paper-filled-symbolic")
+                has_data_icon.set_tooltip_text("This App Has User Data")
+                has_data_icon.set_opacity(0.5)
+                has_data_icon.set_margin_end(10)
+                flatpak_row.add_suffix(has_data_icon)
+
             trash_button = Gtk.Button(icon_name="user-trash-symbolic", valign=Gtk.Align.CENTER, tooltip_text=_(f"Uninstall {app_name}"))
             trash_button.add_css_class("flat")
             trash_button.connect("clicked", self.uninstall_flatpak, index)