Added delly/filter, changed delly/call - this time with up-to-date fork

[alexnater]

PR checklist

Closes https://github.com/nf-core/modules/issues/4808

• [X] This comment contains a description of changes (with reason).
• Added module delly/filter
• Changed module delly/call to allow somatic SV calling
• Changed testing to nf-test for delly/call
• [X] If you've added a new tool - have you followed the module conventions in the contribution docs
• [ ] If necessary, include test data in your PR.
• [X] Remove all TODO statements.
• [X] Emit the versions.yml file.
• [X] Follow the naming conventions.
• [X] Follow the parameters requirements.
• [X] Follow the input/output options guidelines.
• [X] Add a resource label
• [X] Use BioConda and BioContainers if possible to fulfil software requirements.
• Ensure that the test works with either Docker / Singularity. Conda CI tests can be quite flaky:
  • For modules:
    • [ ] nf-core modules test <MODULE> --profile docker
    • [X] nf-core modules test <MODULE> --profile singularity
    • [X] nf-core modules test <MODULE> --profile conda