[TW] Core/SpellScripts: SOTA Demolisher scaling

-Better scaling on demolishers. based on whatever 3.3 footage i was able
to find. 130k is proper base and 196k being the highest seen.
ToDo
- Tanks scales based on highest item level player in the tank including
passengers, should only be driver.
- Tank should scale down aswell (not 100%) but this doesn't happen for
any vehicle at present.
Merge pull request #24 from gecko32/TWBG

[TW] Core/SpellScripts: SOTA Demolisher scaling