clear or delete chat history feature request

### Your use case

#### What would you like to do?
> I would like to be able to delete the chat history
#### Why would you like to do it?
> Since this is a pretty private chatting app, I believe that history deletion is a fair request.
#### How would you like to achieve it?
> there are three ways come to my mind, one is a button or something that delete all chat history, second is to let user choose the time period that they want to delete or user can choose certain messages that they want to delete.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

The issue does not name a file, test, or entry point, so begin by identifying which Element client and chat-history storage paths would be affected. Clarify the deletion scope and expected behavior before implementation; done would require an agreed design and validation for the supported deletion options.

Written by the indexing model from the issue text.