Update nextflow script to new strict syntax and workflow ouput

[dgoebel97]

1. Update nextflow script to new strict syntax: https://www.nextflow.io/docs/stable/strict-syntax.html
2. Update nextflow script to new workflow output definition: https://www.nextflow.io/docs/stable/tutorials/workflow-outputs.html
3. Update python docker containers to 3.14-slim
4. Update minimum Nextflow version to 25.10
5. Add meta-data of SANS to nextflow.config

@rwittler Please check if the new information in nextflow.config are correct and if any major contributors are missing

[dgoebel97]

Apparently, if I use a S3 path as param outdir, the results are NOT uploaded

[dgoebel97]

Apparently, if I use a S3 path as param outdir, the results are NOT uploaded

The problem is the NFS. If the work directory is on the NFS, then the files will be not uploaded. Creating an Index files solves this issue, since the Nextflow process has to read all output files before uploading them.