Ask whether to copy or move groups & direct messages to spaces

### Your use case

#### What would you like to do?
I am using individual spaces for each of my bridges (Telegram, Skype, Signal, etc.). When adding the respective chat groups, they are moved out of the home space, i.e. there is only one instance of a group in all my spaces. When adding direct messages, they are being copied, i.e. they exist in both the dedicated bridge space, as well as the home space.

#### Why would you like to do it?
I want to keep a clean structure, with all chats of a particular bridge to be located in an individual space.

#### How would you like to achieve it?
When adding groups or direct messages to a space I would like to be asked whether it should be copied or moved to the space.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_