Hooks up rename prompt

lib/pages/RenamePrompt.dart

@@ -0,0 +1,42 @@
+import 'package:flutter/material.dart';
+
+class RenamePrompt extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() {
+    return RenameState();
+  }
+}
+
+class RenameState extends State<RenamePrompt> {
+  TextEditingController name = TextEditingController();
+
+  @override
+  void didChangeDependencies() {
+    var args = ModalRoute.of(context)!.settings.arguments as String;
+
+    name.text = args;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+        icon: Icon(Icons.edit_attributes),
+        title: Text("Edit Tag Name"),
+        actions: [
+          ElevatedButton(
+              onPressed: () {
+                Navigator.pop(context, name.text);
+              },
+              child: Text("SUBMIT")),
+          ElevatedButton(
+            onPressed: () {
+              Navigator.pop(context);
+            },
+            child: const Text("CANCEL"),
+          )
+        ],
+        content: TextField(
+          controller: name,
+        ));
+  }
+}