Function addDrawing

src/serializers/SvgSerializer.h:757–760

	}

	void addDrawing(const gp_Pnt& pos, const gp_Dir& dir, const gp_Dir& ref, const std::string& name, bool include_projection) {
		deferred_section_data_.emplace();
		deferred_section_data_->push_back(vertical_section{ gp_Pln(gp_Ax3(pos, dir, ref)), name, include_projection });
	}

	void setSubtractionSettings(subtract_before_project sbp) {
		subtraction_settings_ = sbp;