Add the option to temporarily disable chat history

[clauverjat]

Background
The chat history feature provides users with a convenient way to reference past interactions. We already allow users to reset the history when needed, but there is no way to temporarily disable it.

Summary
Provide an option for users to turn off chat history temporarily, akin to how web browsers allow "Incognito" or "Private" browsing modes. This will be useful for users who, for any reason, do not wish certain chats to be saved in their history.

Benefits:
User Control: Empowers users with more control over their chat data.
Flexibility: Provides a middle-ground solution between having a permanent history and clearing the entire history.

Implementation suggestion:

Add a toggle or button in the settings/chat interface to enable "No History Mode".
While this mode is active, no chat interactions are saved to the history.
Provide an easily visible indicator (e.g., an icon or a banner) to remind users they are in this mode.