[widgets][toolchaineditor] add loop processor/evaluator separator line

beat/editor/widgets/toolchaineditor.py

@@ -1036,6 +1036,13 @@ class Block(QGraphicsObject):
     def draw_pins_name(self, painter, _type, data, offset):
         """Paint pin with name"""
         offset = offset * self.pin_height
+        if offset != 0:
+            # add processor/evaluator separator line
+            painter.setPen(self.pin_pen)
+            separator_height = self.height - self.radius + offset
+            painter.drawLine(
+                self.border, separator_height, self.custom_width, separator_height
+            )
         for pin_name in data:
             # Pin rect
             painter.setBrush(self.background_brush)