Implemented script command opentips (#8005)

- Opens the tip box UI for the attached player or the given character ID.

src/map/script.cpp

@@ -26957,6 +26957,22 @@ BUILDIN_FUNC(has_autoloot) {
 	return SCRIPT_CMD_SUCCESS;
 }
 
+BUILDIN_FUNC(opentips){
+#if PACKETVER < 20171122
+	ShowError( "buildin_opentips: This command requires PACKETVER 20171122 or newer.\n" );
+	return SCRIPT_CMD_FAILURE;
+#else
+	map_session_data* sd;
+
+	if (!script_charid2sd(3, sd)) {
+		return SCRIPT_CMD_FAILURE;
+	}
+
+	clif_ui_open( *sd, OUT_UI_TIP, script_getnum(st, 2) );
+	return SCRIPT_CMD_SUCCESS;
+#endif
+}
+
 #include <custom/script.inc>
 
 // declarations that were supposed to be exported from npc_chat.cpp
@@ -27713,6 +27729,7 @@ struct script_function buildin_func[] = {
 	BUILDIN_DEF(isdead, "?"),
 	BUILDIN_DEF(macro_detector, "?"),
 	BUILDIN_DEF(has_autoloot,"?"),
+	BUILDIN_DEF(opentips, "i?"),
 
 #include <custom/script_def.inc>