Substitute ModulesCommand and SubworkflowsCommand by ComponentsCommand

[mirpedrol]

Try removing ModulesCommand and SubworkflowsCommand and use ComponentsCommand instead as discussed in #1995(comment)

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[codecov]

Codecov Report

Merging #2000 (4eae12d) into dev (3d0c0cc) will increase coverage by 0.73%.
The diff coverage is 71.69%.

❗ Current head 4eae12d differs from pull request most recent head 47dacd5. Consider uploading reports for the commit 47dacd5 to get more accurate results

@@            Coverage Diff             @@
##              dev    #2000      +/-   ##
==========================================
+ Coverage   63.11%   63.84%   +0.73%     
==========================================
  Files          43       41       -2     
  Lines        4945     4915      -30     
==========================================
+ Hits         3121     3138      +17     
+ Misses       1824     1777      -47     

Impacted Files	Coverage Δ
nf_core/components/list.py	69.62% <ø> (ø)
nf_core/components/components_command.py	70.63% <50.00%> (+2.71%)	⬆️
nf_core/modules/info.py	16.66% <66.66%> (+0.11%)	⬆️
nf_core/subworkflows/test_yml_builder.py	15.48% <66.66%> (ø)
nf_core/components/components_test.py	53.52% <100.00%> (+53.52%)	⬆️
nf_core/modules/lint/__init__.py	82.97% <100.00%> (-0.10%)	⬇️
nf_core/modules/test_yml_builder.py	49.77% <100.00%> (ø)

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[awgymer]

I think we should update SubworkflowsTest to also use the refactored ComponentsTest class too.

Everything else is as it was after initial review so I think it's good after that?