feat: add flag to disable rendering for mobjects

Similar to https://github.com/ManimCommunity/manim/pull/2172 for cairo
renderer.
Mobjects flagged with `should_render=False` will not be rendered.

manim/mobject/mobject.py

@@ -111,6 +111,7 @@ class Mobject:
         dim: int = 3,
         target: Mobject | None = None,
         z_index: float = 0,
+        should_render: bool = True,
     ):
         self.name = self.__class__.__name__ if name is None else name
         self.dim = dim
@@ -121,6 +122,7 @@ class Mobject:
         self.updaters: list[_Updater] = []
         self.updating_suspended = False
         self.color = ManimColor.parse(color)
+        self.should_render = should_render
 
         self.reset_points()
         self.generate_points()

manim/renderer/cairo_renderer.py

@@ -158,6 +158,7 @@ class CairoRenderer:
             self.camera.reset()
 
         kwargs["include_submobjects"] = include_submobjects
+        kwargs["excluded_mobjects"] = [mob for mob in mobjects if not mob.should_render]
         self.camera.capture_mobjects(mobjects, **kwargs)
 
     def render(