Add new refinegems nf-core module with config-generation interface

[Copilot]

This PR adds a new nf-core module for refinegems, based on the requested tool/package (0.1.23). The module provides a focused entrypoint for generating refineGEMs configuration YAMLs in standard nf-core module form.

• New module: modules/nf-core/refinegems

  • Added main.nf process REFINEGEMS with standard nf-core module wiring (meta, when, versions output).
  • Exposes config_type input and runs refinegems setup config to produce <prefix>.yaml.

• Tool metadata and environment

  • Added meta.yml with tool docs/license, input/output contracts, and module descriptors.
  • Added environment.yml with conda channels plus pip-installed refineGEMs==0.1.23 (with Python/Pip pins).

• Module test scaffold

  • Added tests/main.nf.test with a stub-path module test.
  • Added tests/main.nf.test.snap snapshot for deterministic expected outputs.

refinegems setup config \
    --type ${config_type} \
    --filename ${prefix}.yaml \
    $args