Threat refactor

[MikeJeffers]

Threats and how they are valued, generated, and manipulated before sending to the threat manager of an NPC are all over the place
Some are here: https://github.com/OpenPerpetuum/PerpetuumServer/blob/Development/src/Perpetuum/Zones/NpcSystem/ThreatManager.cs#L12-L35
But then the relevant amounts and details live elsewhere like:
https://github.com/OpenPerpetuum/PerpetuumServer/blob/Development/src/Perpetuum/Modules/EnergyNeutralizerModule.cs#L51-L52
https://github.com/OpenPerpetuum/PerpetuumServer/blob/Development/src/Perpetuum/Modules/EnergyTransfererModule.cs#L49
https://github.com/OpenPerpetuum/PerpetuumServer/blob/Development/src/Perpetuum/Modules/EnergyVampireModule.cs#L60
https://github.com/OpenPerpetuum/PerpetuumServer/blob/Development/src/Perpetuum/Zones/NpcSystem/Npc.cs#L973

And a few other places (use find all references for ThreatType)

It would be a bit easier to track and manage all the bespoke values and modifiers of threat if they were in one place.
This will help developers reason about and communicate threat value calculation changes to designers and players.

[Ramit110]

Would it make sense to have a ThreatBuilder for this? I'm thinking of making the class with a bunch of static methods for things like BuildThreatNeut(int value), BuildThreat(int value), BuildThreatVampire(int value) ect ect for all the places it's used, that way all the threat calculations are all in one class/file.

[Ramit110]

There's a small bit of duplication in ThreatManager.cs, mentioned in a comment, otherwise code should be acceptable.

56612db and f10d303 are the last commit I'll be doing until I get a response XD