Document Vehicles (#641)

* start doc collision

* fix merge

* finish rename fonction related to vehicle

* document around waypoint of vehicle

* make some modification

* make some change and rename one

* copy_ to oldPos

* doc smoke ferry and train

* some rename

* fix some renaming

* precise index

* rename a funciton

* simplify waypoint_vehicles

* change some name

* change some name

* rename move_to_point_direction

* fix some conflict

* Update code_80005FD0.c

* Update code_80005FD0.h

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Co-authored-by: MegaMech <MegaMech@users.noreply.github.com>

include/waypoints.h

@@ -7,7 +7,7 @@ typedef struct {
     /* 0x00 */ s16 posX;
     /* 0x02 */ s16 posY;
     /* 0x04 */ s16 posZ;
-    /* 0x06 */ u16 trackSegment;
+    /* 0x06 */ u16 trackSectionId;
 } TrackWaypoint; // size = 0x08
 
 /**