d_camera 28% (#732)

* initial progress

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* fix outdated member names

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* fixed deprecated member references

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* fix deprecated member references

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* check in for review

* remove comment

* initial PR changes

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* added anonymous struct as class member

* reverted changes to `stage_camera2_data_class`

* added `dCamera_event_data`, `dCamera_monitoring_things` and `dCamera_DMC_system` from debug maps

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* realmatch for `camera_draw`

* PR changes

* fix broken merge

* formatting

* Reverted change to `camSphChkdata` that caused  `sph_chk_callback` match to regress

* Reverted change to `BG` struct that caused ctor and dtor match to regress

include/f_ap/f_ap_game.h

@@ -24,7 +24,7 @@ public:
     /* 0x09 */ u8 field_0x09;
     /* 0x0A */ u8 field_0x0a;
     /* 0x0B */ u8 field_0x0b;
-    /* 0x0C */ f32 field_0x0c;
+    /* 0x0C */ f32 mAspectRatio;
     /* 0x10 */ u8 field_0x10;
     /* 0x11 */ u8 field_0x11;
     /* 0x12 */ u8 field_0x12;
@@ -77,5 +77,6 @@ inline bool fapGmHIO_isMenu() { return !!(g_HIO.mDisplayFlag & 0x02); }
 inline bool fapGmHIO_getMeter() { return g_HIO.mDisplayMeter; }
 inline s16 fapGmHIO_getFbWidth() { return g_HIO.mFbWidth; }
 inline s16 fapGmHIO_getEfbHeight() { return g_HIO.mEfbHeight; }
+inline f32 fapGmHIO_getAspectRatio() { return g_HIO.mAspectRatio; }
 
 #endif /* F_AP_GAME_H */