Add Keyframe snapping to 2d cursor in Graph editor, Dope sheet and Timeline

Creating lengthy 4000+ frames animation it's a very tought process at its own, but suprisingly in 2019 Blender makes it more teduous by not having keyframe snapping. There's not way to snap 2d cursor or move keyframes with snapping to other closest keyframes.

Here is how it looks in After Effects (Looks handy, isn't it?)

imgur.com/Umi0fyR

Here is how it looks in Blender

imgur.com/G3caR68

Currently tthe only way to snap 2d cursor to keyframes is by selecting the specific keyframe and pressing ctrl-G.

Actually I'm suprized that the team created a few short movies without this small yet important feature.