Import check_format from cwl-utils

[GlassOfWhiskey]

As a consequence of this cwl-utils PR.

[codecov]

Codecov Report

Merging #1717 (b332cd9) into main (49fc1c3) will increase coverage by 0.07%.
The diff coverage is 100.00%.

❗ Current head b332cd9 differs from pull request most recent head 8bc05a5. Consider uploading reports for the commit 8bc05a5 to get more accurate results

@@            Coverage Diff             @@
##             main    #1717      +/-   ##
==========================================
+ Coverage   66.46%   66.54%   +0.07%     
==========================================
  Files          89       89              
  Lines       15908    15850      -58     
  Branches     4216     4188      -28     
==========================================
- Hits        10574    10548      -26     
+ Misses       4233     4214      -19     
+ Partials     1101     1088      -13     

Impacted Files	Coverage Δ
cwltool/builder.py	77.98% <100.00%> (+5.65%)	⬆️
cwltool/singularity.py	61.90% <0.00%> (-2.17%)	⬇️
cwltool/cwltool/builder.py	83.64% <0.00%> (+1.80%)	⬆️

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[mr-c]

Thanks!