[FEATURE] Flow editor annotations/comments

[hacheybj]

Is your feature request related to a problem? Please describe. When collaborating with multiple team members, and building bots over time, it becomes a little hard to remember or understand the entire scope of a given flow and its logic.

The same as code, it would be beneficial to be able to comment sections of a flow for everyone to see.

Describe the solution you'd like Some options:

• Ability to draw a region under groups of nodes and display text in the region which would be our comment
• some kind of sticky note node with our comment we can drop next to sections

Describe alternatives you've considered

Additional context

[alex-Botpress]

As a Content Editor, that would be marvellous.

[spg]

This has been requested by an internal client yesterday