First working version of Flux Plugin.

[leondape]

This is a well working implementation of a BFL Flux tool to be used by agents.
It includes a variety of parameters and best practices for image prompts.
Credits also go to @jmaddington and his work on his fork.

Unfortunately none of us managed to get the images displayed properly in the Chat. It appears to be same issue as with DallE-3 when we moved from plugins to agent tools.
Would be amazing if we learned what the fix for DallE-3 was earlier, just documented in a merge commit or so. ❤️

A workaround for displaying images in the agent Chat remains:

When interacting with image generation tools, you will receive responses containing markdown image URLs.  
Your HIGHEST PRIORITY responsibility after ANY image generation is to IMMEDIATELY display the image in the chat by copying the exact markdown format.  

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Testing

Tools don't have test coverage.

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• My changes do not introduce new warnings
• Local unit tests pass with my changes
• A pull request for updating the documentation has been submitted.