Implement `aniComb`

[ataulien]

Taking an item is implemented via aniComb in HumanS.mds like this:

ani      ("c_Stand_2_IGet_1"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 1 9)
ani      ("c_Stand_2_IGet_2"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 21 29)
ani      ("c_Stand_2_IGet_3"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 41 49)
aniComb  ("t_Stand_2_IGet"    1 "s_IGet"  0.1 0.0 M. "c_Stand_2_IGet_"   3)

ani      ("c_IGet_1"          1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 10 10)
ani      ("c_IGet_2"          1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 30 30)
ani      ("c_IGet_3"          1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 50 50)
aniComb  ("s_IGet"            1 "s_IGet"  0.0 0.0 M. "c_IGet_"     3)

ani      ("c_IGet_2_Stand_1"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 11 19)
ani      ("c_IGet_2_Stand_2"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 31 39)
ani      ("c_IGet_2_Stand_3"  1 ""        0.0 0.0 . "Hum_ItemGet_A03.asc"  F 51 59)
aniComb  ("t_IGet_2_Stand"    1 ""        0.0 0.1 M. "c_IGet_2_Stand_"   3)

These would have to be implemented in both ZenLib and BsZenLib.