Defence - Sandwich defence

[gsproston-scottlogic]

Insert the user input in between two prompts.

https://learnprompting.org/docs/prompt_hacking/defensive_measures/sandwich_defense

Each defence should include the following:

• A frontend component for the defensive measure on the left side bar.
• Checkbox to toggle the defensive measure.
• Some way to get a description of the defensive measure.
• Pulsing the defensive measure component when it captures malicious content.

[gsproston-scottlogic]

Too similar to the XML tagging defence. Just remove this?

[gsproston-scottlogic]

Reopening now that the prompt enclosure defence is being added. #703 Blocked until that's merged in. merged now.