Moving from flytepropeller - Parallelize Node Evaluations

[eapolinario]

TL;DR

This PR parallelizes node evaluations by using go channels to call the handleNode function in a separate go routine and then waiting on all evaluations before compiling overall workflow status.

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

^^^

Tracking Issue

fixes #3866

Follow-up issue

NA

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (d9586b0) 58.98% compared to head (f8c56fe) 61.41%.

❗ Current head f8c56fe differs from pull request most recent head 572251f. Consider uploading reports for the commit 572251f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4155      +/-   ##
==========================================
+ Coverage   58.98%   61.41%   +2.42%     
==========================================
  Files         619      372     -247     
  Lines       52804    26643   -26161     
==========================================
- Hits        31146    16362   -14784     
+ Misses      19174     8675   -10499     
+ Partials     2484     1606     -878     

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see 581 files with indirect coverage changes

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