Mag mapping

[dportik]

Added new features to HiFi-MAG-Pipeline:

• Use local version of CheckM2 database, rather than rely on automated download in workflow. Fixes issues previously raised.
• Added new mapping feature. Converts existing bam to paf, then filters based on unique reads, percent read aligned, and percent identity. Performs at contig and MAG level, generates a table and figure of percent reads mapped.