Script for Prince Liam Greymane NPC and Rampaging Worgen creature

Scripted Prince Liam Greymane in phase 1
Scripted Prince Liam Greymane in phase 2
Scripted Rampaging Worgen Enrage spell
Added SQL text for Prince Liam Greymane emote

To have this script working you need also to pull database repo to get patch for Database.

I've fixed database names and apexes :)