perf: Ont downsampling normalization

[simakro]

Description

downsampling and clipping of ONT reads handled by notramp

Related Issue

Checklist

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• [x] I've updated the code style using pre-commit if needed.
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[thomasbtf]

Seems like NanoFilt doesn't work: https://github.com/IKIM-Essen/uncovar/runs/5407712905?check_suite_focus=true#step:11:839

[thomasbtf]

There is a new snakemake release: https://github.com/snakemake/snakemake/releases/tag/v7.2.1

Let's hope that fixes the report problem.