0c18c1cfc2
This adds an overlay to the animation editors to visualize the current scene strip in and out points in the scene timeline when the `Sync Scene Time` option in the sequencer is used. * Adds an overlay toggle + panel to the dopesheet. * Adds a new theme setting (for the overlay) under `Common` > `Animation` > `Scene Strip Range`. * Adds the overlay drawing to the dopesheet. Pull Request: https://projects.blender.org/blender/blender/pulls/146165
