Add NMPFamsDB domain annotation support

[vagkaratzas]

Description of feature

Use the HMM library from the Novel Metagenome Protein Families resource, and search against it with hmmer/hmmsearch in the domain_annotation subworkflow, similarly to Pfam and FunFam.

[npechl]

Created a branch here proteinannotator/tree/issue_77. I can't create a PR yet (needs additional work).

[vagkaratzas]

Done!