Purpose of this app is to aid the users in creating a skeleton flow definition.
Limitations:
This UI is for convience purposes; and lacks several options available in the flowr package.
One such example is where we have a flow with multiple jobs running in parallel.
Although flowr supports it, we are not able to expose it using this UI.
For example say we have three jobs A, B and C; and C depends on both A and B.
In the flow-definition, one may specify the previou_job for C as: `A,B`