feat: item label can save deployable robot nicknames

src/iuse_actor.cpp

@@ -1096,6 +1096,10 @@ int place_monster_iuse::use( player &p, item &it, bool, const tripoint &pos ) co
             newmon.add_effect( effect_pet, 1_turns, num_bp );
         }
     }
+    // Transfer label from the item to monster nickname
+    if( it.has_var( "item_label" ) ) {
+        newmon.unique_name = it.get_var( "item_label" );
+    }
     // TODO: add a flag instead of monster id or something?
     if( newmon.type->id == mtype_id( "mon_laserturret" ) && !g->is_in_sunlight( newmon.pos() ) ) {
         p.add_msg_if_player( _( "A flashing LED on the laser turret appears to indicate low light." ) );

src/monster.cpp

@@ -3063,6 +3063,10 @@ detached_ptr<item> monster::to_item() const
     detached_ptr<item> result = item::spawn( type->revert_to_itype, calendar::turn );
     const int damfac = std::max( 1, ( result->max_damage() + 1 ) * hp / type->hp );
     result->set_damage( std::max( 0, ( result->max_damage() + 1 ) - damfac ) );
+    // If we have a nickname, save it via the item's label
+    if( !unique_name.empty() ) {
+        result->set_var( "item_label", unique_name );
+    }
     return result;
 }