ENH: Add Nextclade for phylogenetic informed QC

[corneliusroemer]

Is your feature request related to a problem? Please describe. This looks like a great pipeline that includes a lot of useful tools. I've noticed that you're still adding things to it.

One thing that could make it even better is to integrate Nextclade (disclosure: I work on it)

Besides providing an alternative way to call Pango lineages for SARS-CoV-2, Nextclade generalizes clade calling beyond SARS-CoV-2, e.g. Influenza, mpox, etc.

It also outputs helpful QC metrics of the final consensus genome output:

• Reversion mutations relative to nearest neighbor from reference tree(if many this indicates artefacts due to pipeline misconfiguration or contamination or recombination)
• frameshifts -> frameshifts are often a sign of pipeline making an off-by-one indel errors
• stop codons -> indicative of artefacts if in essential genomes
• ambiguous mutations -> can indicate contamination

Nextclade also places a sequence on a phylogenetic tree, which should be appreciated by end users.

Describe the solution you'd like Include Nextclade into the pipeline

Additional context I'd be happy to assist with development of this feature.