feat: allow to create widgets

- supported widget types: therpad, jitsi, video, custom
- update Matrix SDK

Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

lib/pages/chat/edit_widgets_dialog.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:matrix/matrix.dart';
+
+import 'add_widget_tile.dart';
+
+class EditWidgetsDialog extends StatelessWidget {
+  final Room room;
+
+  const EditWidgetsDialog({Key? key, required this.room}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return SimpleDialog(
+      title: Text(L10n.of(context)!.editWidgets),
+      children: [
+        ...room.widgets.map((e) => ListTile(
+              title: Text(e.name ?? e.type),
+              leading: IconButton(
+                  onPressed: () {
+                    room.deleteWidget(e.id!);
+                    Navigator.of(context).pop();
+                  },
+                  icon: const Icon(Icons.delete)),
+            )),
+        AddWidgetTile(room: room),
+      ],
+    );
+  }
+}