Set element position on screen

Description:
Set the element to a fixed position on the screen.
It can be placed at:

1. top-left – top left of view port
2. top-center – top center of view port
3. top-right – top right of view port
4. bottom-left – bottom left of view port
5. bottom-center – bottom center of view port
6. bottom-right – top right of view port
7. center-screen – in the middle of view port

{
    "type": "fixed_position",
    "action": "set",
    "args": {
        "element": "my-element",
        "position": "top-center",
        "margin": 10
    }
}