[enhancement]: Ability to comment out lines in promt

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Contact Details

_No response_

### What should this feature add?

Feature that allows users to temporarily disable parts of the prompt. To 'comment out' parts of prompt to prevent them from influencing the model's responses, similarly to commenting out lines of code in many programming languages.

For example, through the # symbol

It is very useful to be able to comment lines in the input field. To mark yourself:
```
# CHARACTER
...
# SCENE
...
# STYLE and other qualities
...
```

I don’t quite understand whether same function now is available in InvokeAI. Tell me please if feature is available now

### Alternatives

_No response_

### Additional Content

_No response_