Add new command nf-core rocrate to create a Research Object (RO) crate for a pipeline (continuation from #2680) [skip changelog]

[mashehu]

#2680 was auto-merged too fast. Continuing the work with this PR

[mashehu]

@nf-core-bot update snapshots

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.63063% with 43 lines in your changes missing coverage. Please review.

Project coverage is 75.72%. Comparing base (ba332b6) to head (43287c6). Report is 18 commits behind head on dev.

Files with missing lines	Patch %	Lines
nf_core/pipelines/rocrate.py	86.26%	25 Missing :warning:
nf_core/commands_pipelines.py	11.76%	15 Missing :warning:
nf_core/__main__.py	87.50%	1 Missing :warning:
nf_core/modules/modules_json.py	50.00%	1 Missing :warning:
nf_core/pipelines/lint/files_exist.py	83.33%	1 Missing :warning:

Additional details and impacted files

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