add about modal

src/embeddingbuddy/ui/callbacks/interactions.py

@@ -7,6 +7,16 @@ class InteractionCallbacks:
         self._register_callbacks()
 
     def _register_callbacks(self):
+        @callback(
+            Output("about-modal", "is_open"),
+            [Input("about-button", "n_clicks"), Input("about-modal-close", "n_clicks")],
+            prevent_initial_call=True,
+        )
+        def toggle_about_modal(about_clicks, close_clicks):
+            if about_clicks or close_clicks:
+                return True if about_clicks else False
+            return False
+
         @callback(
             [
                 Output("processed-data", "data", allow_duplicate=True),