chore(wip): upgrade dependencies, begin refactor

frontend/lib/old/modules/current_trip_save_button.dart

@@ -0,0 +1,52 @@
+import 'package:flutter/material.dart';
+import 'package:auto_size_text/auto_size_text.dart';
+
+import 'package:anyway/main.dart';
+import 'package:anyway/structs/trip.dart';
+
+
+class saveButton extends StatefulWidget {
+  Trip trip;
+  saveButton({super.key, required this.trip});
+
+  @override
+  State<saveButton> createState() => _saveButtonState();
+}
+
+class _saveButtonState extends State<saveButton> {
+  @override
+  Widget build(BuildContext context) {
+    return ElevatedButton(
+      onPressed: () async {
+        savedTrips.addTrip(widget.trip);
+        rootScaffoldMessengerKey.currentState!.showSnackBar(
+          const SnackBar(
+            content: Text('Trip saved'),
+            duration: Duration(seconds: 2),
+            dismissDirection: DismissDirection.horizontal
+          )
+        );
+      },
+      child: const SizedBox(
+        width: 100,
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Icon(
+              Icons.save,
+            ),
+            Expanded(
+              child: Padding(
+                padding: EdgeInsets.only(left: 10, top: 5, bottom: 5, right: 5),
+                child: AutoSizeText(
+                  'Save trip',
+                  maxLines: 2,
+                ),
+              ),
+            ),
+          ],
+        ),
+      )
+    );
+  }
+}