Allow The Animation Editor to Copy and Paste Keyframes from Other Animations

As of now, animating is tedious because we are not allowed to copy and paste keyframes from other animations. This disallows developers to make animation “modules” which are basically a set of animations that are the base for other animations:

Current behavior:

If Roblox can address this issue it would help my development exponentially as having to manually set the limbs again gets tedious.