Fix: Add missing includes to timers from script implementation files (#11604)

src/script/api/script_basestation.cpp

@@ -15,6 +15,7 @@
 #include "../../strings_func.h"
 #include "../../station_cmd.h"
 #include "../../waypoint_cmd.h"
+#include "../../timer/timer_game_calendar.h"
 #include "table/strings.h"
 
 #include "../../safeguards.h"

src/script/api/script_date.hpp

@@ -11,7 +11,7 @@
 #define SCRIPT_DATE_HPP
 
 #include "script_object.hpp"
-#include "timer/timer_game_calendar.h"
+#include "../../timer/timer_game_calendar.h"
 
 /**
  * Class that handles all date related (calculation) functions.

src/script/api/script_engine.cpp

@@ -18,6 +18,7 @@
 #include "../../engine_func.h"
 #include "../../articulated_vehicles.h"
 #include "../../engine_cmd.h"
+#include "../../timer/timer_game_calendar.h"
 #include "table/strings.h"
 
 #include "../../safeguards.h"