Extract Keyframe Assets data (#1664)

* git subrepo pull --force tools/ZAPD

subrepo:
  subdir:   "tools/ZAPD"
  merged:   "c31c5e9fe"
upstream:
  origin:   "https://github.com/zeldaret/ZAPD.git"
  branch:   "master"
  commit:   "c31c5e9fe"
git-subrepo:
  version:  "0.4.6"
  origin:   "git@github.com:ingydotnet/git-subrepo.git"
  commit:   "110b9eb"

* extract keyframe data

* initialize typo

include/z64keyframe.h

@@ -70,6 +70,8 @@ typedef struct {
     // Array of bitflags for each limb indicating whether to do keyframe interpolation
     // or pull from fixed values that do not change throughout the animation.
     union {
+        // Used to initialize bitflags without warnings
+    /* 0x00 */ void* data;
         // For standard the bit layout in each array element is:
         // [5] X Translation (root limb only)
         // [4] Y Translation (root limb only)