Add QC CSV final output, fix weird or incorrect QC filters

[aofarrel]

• Adds a new task to output QC metrics to a LIMS-compatible file
• Flips tbprofilerQC_max_pct_unmapped into tbprofilerQC_min_pct_mapped, which is more intuitive
• More consistent variable names throughout, and a very basic style guide
• neoTBfastProfiler now filters based on the percentage of reads above q30 AFTER filtering with fastp instead of BEFORE. If filtering is not performed, this value falls back on the value measured BEFORE filtering in order to keep the QC stuff working as expected.
• Decontam defaults to 32 GB now