feat(ui): stub Script_BNConnected

src/ui/game/BattlenetUI.cpp

@@ -188,7 +188,10 @@ int32_t Script_BNReportPlayer(lua_State* L) {
 }
 
 int32_t Script_BNConnected(lua_State* L) {
-    WHOA_UNIMPLEMENTED(0);
+    // TODO real implementation
+    lua_pushboolean(L, false);
+
+    return 1;
 }
 
 int32_t Script_BNFeaturesEnabledAndConnected(lua_State* L) {