✨Allow multiple link for port with string, list and dict type

[AdrySky]

Description

This enable connecting multiple link into port with string, list and dict type which in the codegen side, append the extra values.

Pull Request Type

• Xircuits Core (Jupyterlab Related changes)
• Xircuits Canvas (Custom RD Related changes)
• Xircuits Component Library
• Testing Automation
• Documentation
• Others (Code generator script)

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Tests

1. Change any input port into string type.
   1. Try connecting 2 literal string.
   2. Print output.
   3. Repeat step(i) with literal list and dict.

Tested on?

• Windows
• Linux Ubuntu
• Centos
• Mac
• Others (State here -> xxx )

Notes

The original PR focused on enabling multiports for the any type, but as discussed, the intended use case implementation via multiports could not be implemented in this PR.

[MFA-X-AI]

Thanks for the PR!
I'm getting some issues in the codegen side of things, literal nodes are sometimes returning undefined values. Here's the gist for KerasTrainImageClassifier.
https://gist.github.com/MFA-X-AI/9be15e0abafb7003371905adb3c7ed28
To reproduce, simply run the codeegn.

I'm investigating further what causes it.

[AdrySky]

Sorry. I forgot to put value for default type.

Also, I allow multiple links for same link and port type. Not just for any.

[mansouralawi]

Thanks for the fixes.

• Literal nodes are sometimes returning undefined values: issue is fixed
• Append list,dict,str when input node is [any] type working fine

issue

1- Append list,dict,str when the input node is [list,dict or str] type not working
2- Appending literals although they belong to different input nodes. to reproduce try AutoMLClassificationBlendModels.xircuits

[AdrySky]

Thanks @mansouralawi for the review. Both issue fixed on my side. Appreciate if you could review again.

[mansouralawi]

Thanks for the fixes.

• Literal nodes are sometimes returning undefined values: issue is fixed
• Append list,dict,str when input node is [any] type working fine
• Append list,dict,str when the input node is [list,dict or str] type working fine
• Appending literals although they belong to different input nodes. 'issue is fixed'

Issue

1- Appending 2 trained models of type [any] to input node type [any] produce the error below. (The target is to append the two models to a list)

[MFA-X-AI]

As discussed, the any implementation requires additional features to be added, but for string list and dict it's perfect. Tested and working.
One interesting to note was the order of the append - it follows the order of when the link was created. In the future it would be cool to indicate the order, perhaps by link label.