* Make wrapper for casting skills
this is to reduce magic numbers in the code base
Only updated one use of this to demo that this works.
Will be do more in a sepearate PR.
Also, inadvertantly fix damage stacking and self-damage in the teslapack
* add skill<->behavior caching
* explicit by reference
* address emo's feedback
Addressed an issue where the Spinjitzu Initiate achievement would not progress. This also allows mission tasks that specify that the player must get a kill on an enemy with a skill to progress. Tested mission 1935 and 1139 and both missions progressed and completed as intended.
* add HandleUnmanaged overload to account for skill source
* add source to buff damage skill call to credit players for kills
* use LWOOBJID_EMPTY default arg & behaviorcontext constructor
