feat: Groups and Direct Chats virtual spaces option

lib/pages/settings_chat/settings_chat_view.dart

@@ -76,6 +76,13 @@ class SettingsChatView extends StatelessWidget {
                   child: Icon(Icons.insert_emoticon_outlined),
                 ),
               ),
+              const Divider(height: 1),
+              SettingsSwitchListTile.adaptive(
+                title: L10n.of(context)!.separateChatTypes,
+                onChanged: (b) => AppConfig.separateChatTypes = b,
+                storeKey: SettingKeys.separateChatTypes,
+                defaultValue: AppConfig.separateChatTypes,
+              ),
             ],
           ),
         ),