[Feature]: Keyframe Effects #245

Right now the animator has some destructive actions you can do on keyframes like the floor plane intersection. This explodes the keyframe into a lot of smaller keyframes which give the desired outcome for the animator with relative ease. HOWEVER, these tiny keyframes are hard to manage in the editor.

Abstract away the tiny keyframes into a group of keyframes and communicate to the user that the keyframe has an effect on it using some icon or something on the keyframe. The animation would still be exported with a bunch of small keyframes, but while using a working file you only need to make one selection to move the effected keyframe and any recomputations would be automatic.