basic session create and delete

lib/main.dart

@@ -6,6 +6,7 @@ import 'package:sendtrain/screens/activities_screen.dart';
 import 'package:sendtrain/screens/sessions_screen.dart';
 // ignore: unused_import
 import 'package:sendtrain/database/seed.dart';
+import 'package:sendtrain/widgets/session_creator.dart';
 
 class SendTrain extends StatelessWidget {
   const SendTrain({super.key});
@@ -83,7 +84,12 @@ class _AppState extends State<App> {
             ]),
         floatingActionButton: FloatingActionButton.extended(
           onPressed: () {
-            // Add your onPressed code here!
+            showAdaptiveDialog(
+                barrierColor: Colors.black.withOpacity(0.5),
+                builder: (BuildContext context) => SessionCreator(),
+                barrierDismissible: true,
+                barrierLabel: '',
+                context: context);
           },
           label: const Text('New Session'),
           icon: const Icon(Icons.add_chart),