Simplify and decrease number of nade orb STATs

I thought about improving the whole nades mutator. I tried to do the best possible way to reduce unnecessary STATs.
I reduced the number of these unnecessary STATs into one per each, even there's one created to distinguish orb types.

References:
@Mario talked about that in my MR when I was mentioning: !876 (comment 994851117).

Should I add constants for STAT(NADE_ORB_TYPE) to name what these numbers are? Because I did this way:
0 is healing orb, 1 is entrap orb and 2 is veil orb.

Total STATs:
BEFORE: 161
NOW: 158