Fix drawing ice encasing when using Bunny Hood/hovering

[djevangelia]

Call Matrix_Push() and Matrix_Pop() when drawing Bunny Hood ears and Hover Boots hover. Fixes #687.

Bunny Hood ears and Hover Boots hover use the current matrix to do calculations, but do not remove the resulting matrix. Drawing the ice encasing when frozen is done after ears and hover drawing.
Thus, the ice will be drawn using the new modified matrix, which causes it to become very huge.

Matrix_Push() pushes a new copy of the current matrix onto the stack and Matrix_Pop() removes the matrix on top of the stack.
So by calling these functions before and after the matrix calculations, the ear and hover matrices do not disturb the ice drawing.

Testing

Tested in Ares 1.47, Project64 3.0.1 and Mupen64plus 2.8.
Looks like this: https://www.youtube.com/watch?v=12DBQSBTdV0
To test Hover Boots I called this decomp function, which handles damage and hit response and is the function that sets player frozen. hitResponseType 3 is frozen hit.

Address: func_80837C0C = 0x8038E6A8;

extern void func_80837C0C(z64_game_t* play, z64_link_t* this, int32_t hitResponseType, float speed, float yVelocity, int16_t yRot, int32_t invincibilityTimer);

func_80837C0C(&z64_game, &z64_link, 3, 0.0f, 0.0f, 0, 0);