Awsbatch cpu and memory config

[alneberg]

Specifications for memory and nr of cpus for different processes for aws batch.

This is mostly a copy paste from the uppmax slurm config and probably need to be modified quite a bit.

PR checklist

• PR is made against dev branch
• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated

[apeltzer]

Linking @KochTobi in here who might be very interested in here too ;-)