Selection based /butcher and paste -k flag (kill)

### The Problem

While WorldEdit isn't entity-focused, there are some WorldEdit functions that involve entities for example `//copy -e` and `//paste -e`

I find I frequently am using the `-e` flag for item frames and armor stands.
_Item frames are entities, served as blocks /s
^{Tomatoes are fruit, served as vegetables}_

When pasting a selection - even with `-e` - any current entities in the paste location are not removed (expected behavior)

### A Solution

I suggest to add a flag to a paste (perhaps`-k`) to kill all hanging/block like entities (item frames, armor stands, etc) in the target paste area.

In a short discussion with wiz on [Discord](https://discord.com/channels/80853743897149440/421260739970334720/1251309517694697523), they brought up that it might be nice to have a WorldEdit /butcher type equivalent which would be based on a selection rather than a radius. This would allow players more granular control compared to a `-k` flag since the command could take an argument for what type of entities to kill. Perhaps `//kill `

### Alternatives

_No response_

### Anything Else?

_No response_