Instructions Component

This component is used to provide instructions to the llm, it has two working modes:
- The value is used as a prompt to the llm.
- The value is used as a system prompt and the input is used as a prompt to the llm.
Unnamed inputs are concatenated to the value and used as a prompt to the llm. Named inputs are wrapped with an xml tag <name>value</name> and used as a prompt to the llm.
This block can also take an image or frame as input in case the selected model supports it.
