Repository: godot
Issue: AnimationPlayer missing "copy animation" and "paste animation" from initial menu
Labels: bug,enhancement,topic:editor,topic:animation

### Godot version

4.0 Alpha 7

### System information

Windows 10 Nvidia GTX 1060 Intel i5 4690k

### Issue description

Related #59980

Copy animation and paste animation are missing from the initial menu.

![Desktop Screenshot 2022 05 07 - 04 50 12 97](https://user-images.githubusercontent.com/83078010/167246927-5516741c-1aed-4a77-bc66-33a0dceb5933.png)


Copy animation is only available in manage animations
Paste animation is only available in manage animations

![Image10aa7](https://user-images.githubusercontent.com/83078010/167247005-ea161701-52e3-44fb-bec8-8e5c4687e06e.png)


However, remove animation and new anim is available in the initial menu?
![Image1](https://user-images.githubusercontent.com/83078010/167247020-cff55b87-d698-4c1f-810f-35d94c703866.jpg)



Moreorless, unsure if this is intentional or not, but it is problematic anyhow to only allow for copy and paste in "manage animations"

Moving single animations between animation players or scenes is problematic.

Before
1. Select animation player
2. Copy animation
3. Select animation player
4. Paste animation
Done

Now...
1. Click animation player
1. Open manage animation
2. Scroll through library (Opening this menu does not inherit the animationPlayer.current_animation, which is really awkward, as you would want to copy the current animation you are on)
4. Click on animation (Copy to clipboard is really far from the animation name, so it is easy to misclick without first highlighting the option)
5. Click on animation copy to clipboard
6. Go to other animation player
7. (Sometimes the animation library opens in the middle of the library, again, making this process very awkward)Scroll up to the top and click on paste from clipboard

There are a bunch of unecessary steps now, and since there are no exposed shortcuts, this has become very tedious.
![Image2](https://user-images.githubusercontent.com/83078010/167247037-17a6e6db-acf9-4ba7-b016-91ab63a7d346.jpg)

Bringing back copy animation and paste animation to the initial animation player menu would fix this, and could coexist with existing properties

Again, not sure if this was oversight or by design.

### Steps to reproduce

Prior to #59980
Before
1. Select animation player
2. Copy animation
3. Select animation player
4. Paste animation
Done

Post #59980
Now...
1. Click animation player
1. Open manage animation
2. Scroll through library (Opening this menu does not inherit the animationPlayer.current_animation, which is really awkward, as you would want to copy the current animation you are on)
4. Click on animation (Copy to clipboard is really far from the animation name, so it is easy to misclick without first highlighting the option)
5. Click on animation copy to clipboard
6. Go to other animation player
7. (Sometimes the animation library opens in the middle of the library, again, making this process very awkward)Scroll up to the top and click on paste from clipboard

### Minimal reproduction project

No project needed. This can be explained with pictures/words