Update and extend the source compatibility suite

[turbolent]

Work towards #974

Description

• Fix the FT suite
• Add support for running the Go tests of a suite using the latest Cadence version
• Fix the command line check program: Also check the imported programs
• Add the NBA Top Shot contracts as a suite

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• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

Merging #977 (7801909) into master (3386e0f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #977   +/-   ##
=======================================
  Coverage   75.46%   75.46%           
=======================================
  Files         268      268           
  Lines       32870    32870           
=======================================
  Hits        24805    24805           
  Misses       6929     6929           
  Partials     1136     1136           

Flag	Coverage Δ
unittests	75.46% <ø> (ø)

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[SupunS]

Changes look fine. I don't have much of an idea of what this module/code does though.

[turbolent]

@SupunS There a short description here https://github.com/onflow/cadence/tree/master/compat#source-compatibility-suite. It's similar to / inspired by Swift's Source Compatibility Suite. Let me know if you want to talk more about it!

It would be great to extend it further and use it more to influence our decisions when working on Cadence and also improve our confidence when releasing new versions