GrFN Omit Sources Toggle Flag

[titomeister]

Modified the GrFN data structure to allow it to have a toggle that determines whether or not the source reference information is included in the GrFN JSON. The source reference information is removed before the GrFN dictionary gets converted to JSON. An additional flag is added to 'run_gcc_to_grfn.py' that allows control of the toggle.

[codecov]

Codecov Report

Merging #286 (ad5675f) into master (f7023ef) will decrease coverage by 0.08%.
The diff coverage is 24.13%.

❗ Current head ad5675f differs from pull request most recent head 21357ee. Consider uploading reports for the commit 21357ee to get more accurate results

@@            Coverage Diff             @@
##           master     #286      +/-   ##
==========================================
- Coverage   66.01%   65.93%   -0.09%     
==========================================
  Files          95       95              
  Lines       18014    18041      +27     
==========================================
+ Hits        11892    11895       +3     
- Misses       6122     6146      +24     

Impacted Files	Coverage Δ
automates/model_assembly/networks.py	79.89% <19.23%> (-1.80%)	⬇️
automates/program_analysis/CAST2GrFN/cast.py	81.30% <66.66%> (-0.60%)	⬇️
automates/model_analysis/graph_manipulation.py	70.19% <0.00%> (-0.56%)	⬇️

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