Implemented bottom app bar with control buttons for asset's operation (#15)

mobile/lib/modules/home/ui/delete_diaglog.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+
+class DeleteDialog extends StatelessWidget {
+  const DeleteDialog({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      backgroundColor: Colors.grey[200],
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
+      title: const Text("Delete Permanently"),
+      content: const Text("These items will be permanently deleted from Immich and from your device"),
+      actions: [
+        TextButton(
+          onPressed: () {
+            Navigator.of(context).pop();
+          },
+          child: const Text(
+            "Cancel",
+            style: TextStyle(color: Colors.blueGrey),
+          ),
+        ),
+        TextButton(
+          onPressed: () {},
+          child: Text(
+            "Delete",
+            style: TextStyle(color: Colors.red[400]),
+          ),
+        ),
+      ],
+    );
+  }
+}