Add ability to copy links for rooms and spaces

lib/widgets/chat_page/room_appbar.dart

@@ -3,6 +3,7 @@ import "package:nexus/helpers/extensions/get_headers.dart";
 import "package:nexus/models/full_room.dart";
 import "package:nexus/widgets/appbar.dart";
 import "package:nexus/widgets/avatar_or_hash.dart";
+import "package:nexus/widgets/chat_page/room_menu.dart";
 
 class RoomAppbar extends StatelessWidget implements PreferredSizeWidget {
   final bool isDesktop;
@@ -48,10 +49,12 @@ class RoomAppbar extends StatelessWidget implements PreferredSizeWidget {
       ],
     ),
     actions: [
+      IconButton(onPressed: () {}, icon: Icon(Icons.push_pin)),
       IconButton(
         onPressed: () => onOpenMemberList(context),
         icon: Icon(Icons.people),
       ),
+      RoomMenu(room.roomData),
     ],
   );
 }

lib/widgets/chat_page/room_menu.dart

@@ -0,0 +1,33 @@
+import "package:clipboard/clipboard.dart";
+import "package:flutter/material.dart";
+import "package:matrix/matrix.dart";
+
+class RoomMenu extends StatelessWidget {
+  final Room room;
+  const RoomMenu(this.room, {super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final danger = Theme.of(context).colorScheme.error;
+
+    return PopupMenuButton(
+      itemBuilder: (_) => [
+        PopupMenuItem(
+          onTap: () async {
+            final link = await room.matrixToInviteLink();
+            await FlutterClipboard.copy(link.toString());
+          },
+          child: ListTile(leading: Icon(Icons.link), title: Text("Copy Link")),
+        ),
+        PopupMenuItem(
+          onTap: () =>
+              showDialog(context: context, builder: (context) => AlertDialog()),
+          child: ListTile(
+            leading: Icon(Icons.logout, color: danger),
+            title: Text("Leave", style: TextStyle(color: danger)),
+          ),
+        ),
+      ],
+    );
+  }
+}

lib/widgets/chat_page/sidebar.dart

@@ -9,6 +9,7 @@ import "package:nexus/helpers/extensions/better_when.dart";
 import "package:nexus/helpers/extensions/get_headers.dart";
 import "package:nexus/pages/settings_page.dart";
 import "package:nexus/widgets/avatar_or_hash.dart";
+import "package:nexus/widgets/chat_page/room_menu.dart";
 
 class Sidebar extends HookConsumerWidget {
   const Sidebar({super.key});
@@ -116,6 +117,9 @@ class Sidebar extends HookConsumerWidget {
                           overflow: TextOverflow.ellipsis,
                         ),
                         backgroundColor: Colors.transparent,
+                        actions: [
+                          if (space.roomData != null) RoomMenu(space.roomData!),
+                        ],
                       ),
                       body: NavigationRail(
                         scrollable: true,