Animation Cleanup: En_C* and En_D* Actors (#1327)

* En_C cleanup

* En_D

* more cleanup

* name enums

* missed one

* PR Review

* remove padding

include/z_en_hy_code.h

@@ -30,6 +30,7 @@ typedef enum EnHyLimb {
 
 //! TODO: Better animaion enum names when animations are documented
 typedef enum {
+    /* -1 */ ENHY_ANIM_NONE = -1,
     /*  0 */ ENHY_ANIM_AOB_0,
     /*  1 */ ENHY_ANIM_BOJ_1,
     /*  2 */ ENHY_ANIM_BOJ_2,