Fix source port resolution in CWL translator

[LanderOtto]

This commit fixes an issue where a CWL workflow defines an input and an output with the same name. Before this commit, the StreamFlow translator created a malformed workflow, leading to a deadlock or erroneous execution.

The fix leverages the StreamFlow approach for translating inner objects to outer objects. When a step requires a source port and it is a port of another step, the port is already attached to the step. If the port is not an output of a step, it means the port is the output of the workflow

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.01%. Comparing base (99dd235) to head (ef934c1).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1048      +/-   ##
==========================================
+ Coverage   74.99%   75.01%   +0.02%     
==========================================
  Files          89       89              
  Lines       12305    12305              
  Branches     2150     2150              
==========================================
+ Hits         9228     9231       +3     
+ Misses       2550     2549       -1     
+ Partials      527      525       -2     

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[LanderOtto]

Test added in common-workflow-language/cwl-v1.3/pull/98