Use a controlled vocabulary when linting input and output types in meta.yml

[mahesh-panchal]

Description of feature

There are parts of the meta.yml that don't have a clear specification.
For example

input:
...
  - sdf:
      type: folder/file
      description: The SDF (RTG Sequence Data File) of the reference genome. Can be a folder or a tar-zipped folder.
      pattern: "*.{,tar.gz}"

input.sdf.type should probably use a controlled vocabulary, but it's currently uncontrolled.

It would be nice if
nf-core modules lint validated the type using a controlled vocabulary.

[jfy133]

I think this has been addressed now right @mashehu @mirpedrol ? We have fixed input types I believe?

[mashehu]

Correct, the yaml-schema checks that now.