Union rework

[sumankun]

Changelog:

-universal code to easier add new unions. Each union is one story cycle
-You can call your union members in offensive wars only if you are the leader of the union. High (de)centralization can change it
-Marriage penalty modifier for acception doesnt take union allies into account
-Forsaken can easier join horde if they took any kingdom (Lordaeron for Sylvanas). And people dont leave the union if Sylvanas(or other undead) became a leader of the Horde

added 4 new unions

universal decisions for create/join/leave union

new union game rule. If you enable it, all states inside one faction will have same color on political map. Every union has its own color

union elections. Every candidate has a score. The score is a chance to become the next leader. Your chance = (your score/total score of all candidates). Score depends on various conditions(tier level, stats, prestige level etc). You can invest prestige/gold to increase chances

centralization-decentralization system, which decides what bonuses union members/union leader get from character modifier. It also influences who you can call into offensive war from union and determines penalty/bonus for score of primary heir of the current union leader

Tests:

• There are no errors in wc files in Documents\Paradox Interactive\Crusader Kings III\logs\error.log

[ElMariuso]

LGTM as I said in PM