Implement xvcv_mdlc_leader_making_trait_pick_alt_effect to add dlc restrictions to trait

I implemented this wrong.. go back thru the traits, decide which should have DLC restrictions (maybe make a separate map of trait names to DLC) and then knocktogether some lines of code to properly print this out to restrict players from picking (not seeing, but picking) a trait if they dont have the required DLC.

#leader_trait_trickster_2
xvcv_mdlc_leader_making_trait_admiral_leader_trait_trickster_2_add_button_effect = {
    potential = { always = yes }
    allow = {
        xvcv_mdlc_leader_making_trait_pick_alt_trigger = { CLASS = admiral ID = leader_trait_trickster_2 SCRIPTED_TRIGGER = has_first_contact_dlc BOOLEAN = yes }
        xvcv_mdlc_leader_making_trait_cost_trigger = yes
        xvcv_mdlc_leader_making_trait_points_trigger = yes
        xvcv_mdlc_leader_making_trait_max_number_trigger = yes
        xvcv_mdlc_leader_making_picked_class_admiral_trigger = yes
    }
    effect = {
        xvcv_mdlc_leader_making_trait_pick_alt_effect = { CLASS = admiral ID = leader_trait_trickster_2 SCRIPTED_TRIGGER = has_first_contact_dlc BOOLEAN = yes }
        hidden_effect = { xvcv_mdlc_leader_making_trait_count_points_costs_effect = yes }
    }
}

openly-retro / stellaris-machine-robot-expansion

Implement xvcv_mdlc_leader_making_trait_pick_alt_effect to add dlc restrictions to trait #71