added workflow to add bookmark from share intent

lib/widgets/create_bookmark_dialog.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 import '../model/bookmark.dart';
+import '../model/maps_link_metadata.dart';
 
 class CreateBookmarkDialog extends StatelessWidget {
   const CreateBookmarkDialog({
@@ -9,10 +10,12 @@ class CreateBookmarkDialog extends StatelessWidget {
     required this.collectionId,
     required this.onSavePressed,
     this.selectedBookmark,
+    this.selectedMapsLink,
   });
   final void Function(Bookmark bookmark) onSavePressed;
   final int collectionId;
   final Bookmark? selectedBookmark;
+  final MapsLinkMetadata? selectedMapsLink;
 
   @override
   Widget build(BuildContext context) {
@@ -20,6 +23,12 @@ class CreateBookmarkDialog extends StatelessWidget {
     final linkController = TextEditingController();
     final descriptionController = TextEditingController();
 
+    if (selectedMapsLink != null) {
+      nameController.text = selectedMapsLink!.placeName;
+      linkController.text = selectedMapsLink!.url;
+      descriptionController.text = selectedMapsLink!.description;
+    }
+
     return AlertDialog(
       title: Text('Create Bookmark'),
       content: SingleChildScrollView(
@@ -82,19 +91,28 @@ class CreateBookmarkDialog extends StatelessWidget {
         ),
       ),
       actions: [
-        FloatingActionButton(
-          onPressed: () {
-            onSavePressed(
-              Bookmark(
-                collectionId: collectionId,
-                name: nameController.text,
-                link: linkController.text,
-                description: descriptionController.text,
-              ),
-            );
-            Navigator.of(context).pop();
-          },
-          child: Icon(Icons.save),
+        Column(
+          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+          children: [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(),
+              child: Text('Cancel'),
+            ),
+            FloatingActionButton(
+              onPressed: () {
+                onSavePressed(
+                  Bookmark(
+                    collectionId: collectionId,
+                    name: nameController.text,
+                    link: linkController.text,
+                    description: descriptionController.text,
+                  ),
+                );
+                Navigator.of(context).pop();
+              },
+              child: Icon(Icons.save),
+            ),
+          ],
         ),
       ],
     );