Add gov type "Shah" for Parthia

[MasterSon-git]

in common\government_types

gov_shah = {
    transfer_of_power = hereditary

    male_ruler = "RULER_TITLE_SHAH"
    female_ruler = "" # Empty on purpose

    male_heir = "RULER_TITLE_CROWN_PRINCE"
    female_heir = "" # Empty on purpose

    possible = {
        has_law = law_type:law_monarchy
        OR = {
            AND = { exists = c:PER c:PER = ROOT }
            AND = { exists = c:P01 c:P01 = ROOT }
        }
    }

    on_government_type_change = {
        change_to_hereditary = yes
    }
    on_post_government_type_change = {
        post_change_to_hereditary = yes
    }
}

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