Add support for expression objects

[cdavernas]

What would you like to be added:

Provide support for using both object and string expressions for input.from, export.as and output.as.

Why is this needed:

• Convenience
• Improved readability for complex expressions

Currently:

...
output: 
  as: '{ style: { shape: "circle", backgroundColor: .colors[0] } }'

Proposal:

...
output:
  as:
    shape: circle
    style:
      backgroundColor: ${ .colors[0] }

[ricardozanini]

+1000 are you working on it?

[cdavernas]

@ricardozanini I'll open a PR as soon as we get a consensus!
It's actually already supported by https://github.com/serverlessworkflow/synapse/tree/1.0.0-alpha1.

[ricardozanini]

Just adding the assignee then to facilitate planning :P

[cdavernas]

@fjtirado @JBBianchi @matthias-pichler-warrify sounds good to you guys?

[JBBianchi]

Good call!

[fjtirado]

Sure, makes sense.

[matthias-pichler]

looks good 👍