Remove all combat/effect accumulator related functions.

These have been seperated out in to seperate nwnx_plugins
and will no longer be implemented in Lua, but in C++ for
performance related reasons.
Fix a few typos.
Update funcs bridge and ctypes to new TALib.

These reflect the changes in the nwnx solstice plugin to a new
C api.
NWNX Update

- Add new function to nwnx/effects to send chat log message containing
  information on all currently applied effects.
- Add nwnx/combat interface to the new nwnx_combat plugin.
- Update nwnx.lua loader.