Improved add links

lib/widgets/autocomplete_text_field.dart

@@ -1,62 +0,0 @@
-import 'package:flutter/material.dart';
-
-class AutocompleteTextField extends StatefulWidget {
-  final IconData leadingIcon;
-  final String label;
-
-  const AutocompleteTextField({
-    Key? key,
-    required this.leadingIcon,
-    required this.label,
-  }) : super(key: key);
-
-  @override
-  State<AutocompleteTextField> createState() => _AutocompleteTextFieldState();
-}
-
-class _AutocompleteTextFieldState extends State<AutocompleteTextField> {
-  final _controller = TextEditingController();
-  final _overlayController = OverlayPortalController();
-
-  @override
-  Widget build(BuildContext context) {
-    return Stack(
-      children: [
-        TextFormField(
-          controller: _controller,
-          onChanged: (value) {
-            if (value.isNotEmpty) {
-              _overlayController.show();
-            } else {
-              _overlayController.hide();
-            }
-          },
-          decoration: InputDecoration(
-            prefixIcon: Icon(widget.leadingIcon),
-            border: const OutlineInputBorder(
-              borderRadius: BorderRadius.all(
-                Radius.circular(10),
-              ),
-            ),
-            labelText: widget.label,
-          ),
-        ),
-        OverlayPortal(
-          controller: _overlayController,
-          overlayChildBuilder: (context) => Positioned(
-            top: 0,
-            left: 0,
-            child: Container(
-              width: 100,
-              height: 100,
-              decoration: BoxDecoration(
-                borderRadius: BorderRadius.circular(8),
-                color: Colors.grey,
-              ),
-            ),
-          ),
-        ),
-      ],
-    );
-  }
-}