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...

[edmundmiller]

Two different ways we can handle these:

1. Setting the memory dynamically for algorithm things. We can take a filesize/number of files/runtime requirement and calculate pretty close to the CPUs/memory. Set BWA and bwamem2 index memory dynamically #6628
2. Point of diminishing returns with resourceLimits(users can take them off if they really want to). Limit Trimgalore to 15 cpus #7173