Reduce LUS header bloat & improve build speed (#6802)

* Avoid `randomizer_check_tracker.h` in widely used `randomizer.h` due to transitive `libultraship.h`/`UIWidgets.hpp` inclusion

* Avoid `libultraship.h` inclusion in heavily used `GameInteractor.h` header

* Remove unused libultraship includes

* Break huge unneeded transitive include chain (via UIWidgets.hpp)

This avoids that changing just UIWidgets.hpp, for example, would retrigger a rebuild of like half the project.

There were a huge transitive include chains, mostly via MenuTypes.h and UIWidgets.hpp. Because of that, I'm splitting UIWidgets into a second header file UIWidgetOptions.hpp, which can be consumed by MenuTypes.h. MenuTypes.h is split into BackendTypes.h to avoid pulling in Fast3D/Windowing/GUI stuff into unrelated code.

Example chain, one of many:
libultraship.h <- UIWidgets.hpp <- MenuTypes.hpp <- randomizer/option.h <- randomizer/item_location.h <- trial.h <- static_data.h <- SeedContext <- (basically all randomizer related sources, lots of other sources in Enhancement, more...)

* Avoid libultraship.h in Notification.h and ObjectExtension.h; these headers are also heavily used

* Add missing include

* Remove unused libultraship includes

* Include only ship/window/GuiWindow.h in GUI-related headers instead of libultraship.h

* Cleanup ConfigUpdater.h and playthrough.cpp

* Remove libultraship.h from Anchor.h and fix transitive dependencies in OTRGlobals.cpp

* Remove unused libultraship.h includes in Anchor code

soh/include/global.h

@@ -9,8 +9,14 @@
 #include "variables.h"
 #include "macros.h"
 #include "soh/cvar_prefixes.h"
+#ifdef __cplusplus
+extern "C++" {
+#endif
 #include "soh/Enhancements/gameconsole.h"
 #include "soh/Enhancements/gameplaystats.h"
+#ifdef __cplusplus
+}
+#endif
 #include <libultraship/bridge.h>
 
 #define _AudioseqSegmentRomStart "Audioseq"