Push to new workspace

### Problem

A lot of people miss minimizing as a way to get an app out of your sight for a second.
I think that's a valid usecase and going either via move to next workspace (then you have to go back to what you originally wanted to do) or via multitasking view is quite awkward.

### Proposal

Introduce a push to new workspace action (for now e.g. with keybind and gesture).
This will slide the currently focused window out to the right and move it to a newly created workspace that's inserted on your right.
This way
- Your workflow isn't interrupted because the window is just gone
- No inconsistent behavior like with minimizing (where did the window go???)

### Prior Art (Optional)

Some discussion already took place in #407 which is a very similar proposal with some additional changes that go further so this is more limited to be more actionable.
Also things have changed since then because we don't support minimize at all in the dock now