feat: friendly wildlife mammals spawn friendly offspring

Players usually tame wildlife that can be considered 'farm-animals'.
It's tedious to require the player to keep taming offspring of the
animals they have already tamed in the first place so this change
addresses that. Mostly meant as QoL change for farm players.

src/monster.cpp

@@ -507,10 +507,14 @@ void monster::try_reproduce()
         }
 
         chance += 2;
+
+        // wildlife creatures that are friendly to the player will spawn friendly offspring
+        const bool friendly_parent = type->in_category( "WILDLIFE" ) &&
+                                     attitude_to( get_player_character() ) == Attitude::A_FRIENDLY;
         if( season_match && female && one_in( chance ) ) {
             int spawn_cnt = rng( 1, type->baby_count );
             if( type->baby_monster ) {
-                g->m.add_spawn( type->baby_monster, spawn_cnt, pos() );
+                g->m.add_spawn( type->baby_monster, spawn_cnt, pos(), friendly_parent );
             } else {
                 g->m.add_item_or_charges( pos(), item::spawn( type->baby_egg, *baby_timer, spawn_cnt ), true );
             }