Partition what can be passed as external args in pipeline and what needs to be added exposed as config

[keiran-rowell-unsw]

Description of feature

https://github.com/nf-core/modules/blob/master/modules/nf-core/mmseqs/createdb/main.nf

[tlitfin]

thinks like --gpu 1 and --index-subset 2 for excluding kmers from index.

[keiran-rowell-unsw]

Definitely going to be ext.args but in the pipeline config because 'process_gpu' label is there.?

See nf-core maintainers opinions here:
https://nfcore.slack.com/archives/CJRH30T6V/p1771515157526009