Improve module specific resource requests

[edmundmiller]

Meta issue from #6628 for more discussion and dropping some resources.

We might need to do some benchmarking of the biggest bottleneck modules.

[edmundmiller]

• Huge samtools sort analysis
• Samtools sort can use more memory than you give it https://github.com/snakemake/snakemake-wrappers/pull/2648/files
• efficiency per CPU task

[edmundmiller]

Resource limits will probably help for example bismark align

[SPPearce]

Hmmm, I implemented the samtools sort memory setting in my in-house pipeline last week...