Added independent flowcharts

You can now create flowcharts independent of chats.

Example use cases:

Consultant wants to share the finished flowchart, but not the chat

1. Consultant creates a chat with a flowchart.

2. Consultant refines flowchart.

3. Consultant clicks ‘copy flowchart’ to make an independent flowchart.

4. Consultant moves independent flowchart to team space for client to review.

Stakeholder wants to start a new AI chat with an independent flowchart

1. Stakeholder opens independent flowchart

2. Stakeholder clicks ‘start chat’ (see above)

3. Stakeholder asks AI for refinements on the flowchart