Add a new node to a workflow (front-end)

[Devessier]

To do:

• Open the right drawer to let the user select the node to create
  • This requires to know what's the currently selected node in the right drawer. For that, we need to use a recoil state. This will also be required for Update a node to a workflow (front-end) #6667.
• Set the parameters of the node in the right drawer
• Send the data to the backend and ensure the flow is updated client-side

See:

• Visualize Workflows #6697 (comment)