document more ep3 commands

src/SendCommands.cc

@@ -1854,7 +1854,6 @@ void send_ep3_media_update(
   send_command(c, 0xB9, 0x00, w.str());
 }
 
-// sends the client a generic rank
 void send_ep3_rank_update(shared_ptr<Client> c) {
   S_RankUpdate_GC_Ep3_B7 cmd = {
       0, "\0\0\0\0\0\0\0\0\0\0\0", 1000000, 1000000, 0xFFFFFFFF};
@@ -1893,6 +1892,12 @@ void send_ep3_card_battle_table_state(shared_ptr<Lobby> l, uint16_t table_number
   }
 }
 
+void send_ep3_set_context_token(shared_ptr<Client> c, uint32_t context_token) {
+  G_SetContextToken_GC_Ep3_6xB4x1F cmd;
+  cmd.context_token = context_token;
+  send_command_t(c, 0xC9, 0x00, cmd);
+}
+
 void set_mask_for_ep3_game_command(void* vdata, size_t size, uint8_t mask_key) {
   if (size < 8) {
     throw logic_error("Episode 3 game command is too short for masking");