Initial release of nf-core/proteinfamilies, created with the nf-core template.

Added

• Amino acid sequence clustering (mmseqs)
• Multiple sequence alignment (famsa, mafft, clipkit)
• Hidden Markov Model generation (hmmer)
• Between families redundancy removal (hmmer)
• In-family sequence redundancy removal (mmseqs)
• Family updating (hmmer, seqkit, mmseqs, famsa, mafft, clipkit)
• Family statistics presentation (multiqc)

By @vagkaratzas and @mberacochea.