add missing translations

app/src/main/res/values-fa/strings.xml

@@ -318,6 +318,7 @@
     <string name="chatroom_header">سرپیام</string>
 
     <!--ChatRooms Headers-->
+    <string name="header_favorite">Favorites</string><!-- TODO - Add proper translation -->
     <string name="header_channel">کانال‌ها</string>
     <string name="header_private_groups">گروه‌های خصوصی</string>
     <string name="header_direct_messages">پیام‌های خصوصی</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -317,7 +317,7 @@
     <string name="chatroom_header">Cabeçalho</string>
 
     <!--ChatRooms Headers-->
-    <string name="header_favorite">Favorites</string><!-- TODO - Add proper translation -->
+    <string name="header_favorite">Favoritos</string>
     <string name="header_channel">Canais</string>
     <string name="header_private_groups">Grupos Privados</string>
     <string name="header_direct_messages">Mensagens diretas</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -315,6 +315,7 @@
     <string name="chatroom_header">头部</string>
 
     <!--ChatRooms Headers-->
+    <string name="header_favorite">Favorites</string><!-- TODO - Add proper translation -->
     <string name="header_channel">频道</string>
     <string name="header_private_groups">私人组</string>
     <string name="header_direct_messages">直接对话</string>