War conversion

[IohannesIohannium]

Output in /common/history/diplomatic_plays/99_converter.txt
Each entry should have the following syntax:

DIPLOMATIC_PLAYS = {
	c:[Attacker tag] = {
		create_diplomatic_play = {
			name = [localized string]
		
			target_state = s:[STATE_NAME].region_state:[ABC]
			
			war = yes
			
			type = [casus belli]
			
			add_war_goal = {
				holder = c:[Defender tag]
				type = [war_goal]
				target_state = s:[STATE_NAME].region_state:[ABC]
			}			
		}	
	}
}

Casus belli is mapped through war_goal_map.txt configurable.

[war_goal] is mapped through defense_war_goal_map.txt

No idea yet how to use target_state or how to trigger co-belligerants

[gawquon]

Include a fronter option to toggle if wars are converted or not, even in a good conversion this can get messy. Also makes less sense for people time skipping their games from 1821->1836.