Added FromSource metadata to GrFN, fixed 3.0 FunctionDef containers

[rsulli55]

• Added metadata for variables introduced for interfaces, return values, arguments, and conditionals
• After adding metadata, we adjusted aliasing of GrFN variables.
• Fixed bug with FunctionDef argument ids in top interface. This resolves an issue for GrFN generation for 3.0 FunctionDef containers

[codecov[bot]]

Codecov Report

Merging #292 (4f48449) into master (d794648) will increase coverage by 0.02%. The diff coverage is 76.00%.

:exclamation: Current head 4f48449 differs from pull request most recent head a5e5720. Consider uploading reports for the commit a5e5720 to get more accurate results

@@            Coverage Diff             @@
##           master     #292      +/-   ##
==========================================
+ Coverage   63.14%   63.17%   +0.02%     
==========================================
  Files          96       96              
  Lines       18914    18936      +22     
==========================================
+ Hits        11944    11962      +18     
- Misses       6970     6974       +4     

Impacted Files	Coverage Δ
...gram_analysis/CAST2GrFN/ann_cast/annotated_cast.py	29.24% <64.28%> (+0.98%)	:arrow_up:
automates/model_assembly/metadata.py	88.36% <66.66%> (-0.19%)	:arrow_down:
automates/model_assembly/networks.py	80.63% <100.00%> (+0.14%)	:arrow_up:

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[jobagy]

We worked on these changes together. In working on the metadata, we found that some of the aliasing of grfn variables needed to be modified/corrected. Doing this resolved a bug in non-GrFN generation. We will continue to review the aliasing logic.